CNBM GROUP CNBM International Corporation

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1 SEAMLESS STEEL PIPE

CONTENTS ABOUTS US -------------------------------------------------- 2 OUR ADVANTAGE ------------------------------------------ 3 CNBM SEAMLESS STEEL PIPE PRODUCTS SERIES --- 4 PRODUCTS INTRODUCTION

3 CONTENTS ABOUTS US OUR ADVANTAGE CNBM SEAMLESS STEEL PIPE PRODUCTS SERIES PRODUCTS INTRODUCTION LINE PIPE TUBING AND CASING L & M & H BOILER TUBE GAS CYLINDER TUBE & PIPE QUALITY SECTION CHART QC & QA AND CERTIFICATION

ABOUTS US CNBM GROUP Established in 1984, CNBM, China National Building Material Group Corporation, is the largest company in China building material & equipment industry, with 50,000 employees and

4 ABOUTS US CNBM GROUP Established in 1984, CNBM, China National Building Material Group Corporation, is the largest company in China building material & equipment industry, with 50,000 employees and total assets of 55 billion RMB. In 2006, China National Building Material Company Limited was listed on Hong Kong Stock Market with the stock code as The business scope of CNBM covers from manufacturing and sales of a series of building materials to scientific research and design, machinery, import and export trade. In many of these fields, CNBM is playing the leading role. CNBM International Corporation is one of subordinating firms of China National Building Materials (Group) Corporation. We are one of leading manufacturer and supplier specialized in steel pipe products in China, and we can offer three series seamless steel pipes including line pipes, tubing & casing, and boiler tube & alloy tube for different standard specifications, such as API 5L, API 5CT,ASTM A53, ASTM A106, ASTM A213 & A213M, ASTM A192 & A192M, ASTM A210 & A210M, ASTM A519, ASTM A179 & A179M, DIN 17175, ASME SA213 & SA213M, ASME SA192 & SA192M, ASME SA120 & SA210M, ASME SA179 & SA179M, JIS G3461 & G3462 & G3454 & G3455 & G3456 and ISO3183 and etc. The main minimal is from 1/2 and maximal OD is up to 20 with wall thickness based on standard including SCH 10, SCH20, STD, SCH40, SCH 80, SCH160 and also based on non-standard according to customers requirements. We have exported our high quality seamless steel pipes to the whole world, such as Middle East countries (Iran, UAE, Syria, Jordan, Saudi Arabia, Bahrain, Kuwait, Iraq), Africa (Egypt, South Africa, Sudan, Ghana, Angola, Nigeria, Mauritius, Kenya), Europe (Greek, France, Spain), South and North America (Chile, Argentina, Brazil, Venezuela, Mexico, Canada, American), ect. All of staffs in our team would like to thanks for your attention to our products, and welcome you to give us your valuable comments on our products and services. 2

OUR ADVANTAGE Professional team ensures consistent quality Professional sales team Professional engineering and technology team Professional exportation contract execute team Professional cooperators

Structural pipe Ship-building tube & pipe Automobile tube & pipe Creditable supporting makes your business safe at any time Our company is Government Company and Government will provide many capitals

5 OUR ADVANTAGE Professional team ensures consistent quality Professional sales team Professional engineering and technology team Professional exportation contract execute team Professional cooperators and partners for other products we can not produce All-series products are easy for you to purchase in one-stop Line pipe Tubing and casing L & M & H boiler tube Gas cylinder tube & pipe Mechanical & Structural pipe Ship-building tube & pipe Automobile tube & pipe Creditable supporting makes your business safe at any time Our company is Government Company and Government will provide many capitals supporting every year; Our company has a good creditable standing, and many famous banks actively request to provide all kinds of international loans for our company every year; Our company is top one manufacturer and supplier in building material industries in China, and has many creditable partners and cooperators are willing to cooperate with our company. Brand of strength we can provide will make your business to develop quickly All-around oversea branches and oversea service are convenient for you Head office is responsible for sales, quotation, production, and shipment Oversea branches are responsible for after service and consulting 3

6 CNBM SEAMLESS STEEL PIPE PRODUCTS SERIES PRODUCTS SIZE RANGE STANDARD STEEL GRADE Line pipes 1/2"-24" API 5L, ASTM A 106/53, ISO3183,IPS,etc A,B,X42,X46,X52,X56,X60,X65,X70 Tubing 1.900"-4 1/2" API 5CT, API 5B,ISO11960 Casing 4 1/2"-16" API 5CT, API 5B,ISO11960 L&M&H Boiler tube Gas cylinder tube & pipe Mechanical & Structure pipe Ship-building tube & pipe Automobile semishaft casing 10mm-159mm 60mm-273mm 1/2"-20" DIN17175,EN10216,ASME SA213 & SA213M & SA210 & SA210M & SA192 & SA192M & SA106 & SA209M & SA335M,ASTM A210 & A210M & A179 & A179M & A192 & A192M & A213 & A213M,JIS G3429 & G3461/3462, GB 3087 & 5310 GB18248, JIS G3429, EN10297,EN10083,ASTM A519 ASTM A519,EN10297, EN10210,JIS G3445,GB/ T8163 1/2"-20" CCS,GL,LR,BV,ABS,DNV,NK,KR,RINA 77mm, 83mm YB/T5035,SAE J55,K55,N80-1,N80Q,M65,L80-1,C90-1,C90-2,C95,T95-1,T95-2,P110 J55,K55,N80-1,N80Q,M65,L80-1,C90-1,C90-2,C95,T95-1,T95-2,P110 St35.8, St45.8, 17Mn4,19Mn5,15Mo3,13CrMo910,SA- 192,A1,B,C,T1,T1a,T2/P2,T11/P11,T12/P12,T22/ P22,T23/P23,T24,T91/P91,STB340,STB410, A179,A192,P195TR1, P195TR2, P235TR1, P235TR2, P265TR1, P265TR2, 30CrMo,34Mn2V,35CrMo,37Mn,34CrMo4,4135,4130,S TH11,STH12,STH21,STH ,1020,1026,1045,1518,4130,E235, E275,E315,E 355,E470,C22E,S235JRH,S275JOH,S275J2H,S355JO H,S355J2H,S355K2H, STKM11A,STKM12A,STKM12B,STKM12C, STKM13A,STKM13B,STKM13C,STKM14A, STKM14B,STKM14C 320, 360, 410, 460, 490, GL-R410, 37Mn, 34CrMo4, A53B, 410HB, RST138 &142 & 238 & 242 & 249 & 338 & 342, 00Cr17Ni14Mo2, 0Cr18Ni9Ti 25MnCr,20Mn2,30Mn2,SAE1527,45, 45Mn2,40MnB,40Cr PRODUCTS INTRODUCE LINE PIPE : API SPEC 5L Application: it is used for conveying gas, water, and petroleum for oil and natural gas industries Technology: Tolerance on Dimension: Outside Diameter Tolerance Wall Thickness Tolerance Tolerance API SPEC 5L D< mm,-0.40mm API SPEC 5L D %D,-0.40mm +15%,-12.5% 4

Mechanical Properties: (%) (J) Yield strength Tensile Strength Elongation Impact Energy PSL1 B 241 414 42 290 414 46 317 434 52 359 455 56 386 490 60 414 517 65 448 531 API SPEC 5L 70 483 565 See

7 Mechanical Properties: (%) (J) Yield strength Tensile Strength Elongation Impact Energy PSL1 B API SPEC 5L See table 3 of PSL2 API SPEC 5L Min Max Min Max Min B (27) (27) (27) (27) (27) (27) (27) (27) Note: Transverse impact energy requirements are shown in brackets. Chemical Composition (%) C Mn P S Max Max Min Max Max PSL1 B , 52, API SPEC 5L 60, 65, PSLS2 B , 52, , 65, Note: CE (llw) 0.43%Max.for PSL2 5

ASTM A106, ASTM A53, ISO3183-2-1996 Application: it is used for conveyance of petroleum, gas and conveyance of other fluid.

8 ASTM A106, ASTM A53, ISO Application: it is used for conveyance of petroleum, gas and conveyance of other fluid. Technology Data ASTM A106 Chemical Composition (%) Mechanical Properties C Si Mn P.S Cr Mo Nl Cu V Tensie Yeid Strength Strength A ~ B ~ C ~ Chemical Composition (%) Mechanical Properties C Si Mn P S Cu Ni Mo Cr V Tensie Strength Yeid Strength ASTM A53 A 0.25 / B 0.30 / Chemical Composition(%) Mechanical Propentes C Si Mn P S V Nb Ti T.S Y.S. A(%) max max Max Max Max Max Max Max min Min min L245 or B L290 or ISO3183 L320 or L360 or L390 or : IPS-M-PL-190(2) Application: it is used for conveying gas, water, and petroleum for oil and natural gas industries Technology: CHEMICAL REQUIREMENTS FOR PRODUCT ANALYSIS BY PERCENTAGE OF WEIGHT (NON-SOUR SERVICES) Maximum permitted alloy content, wt% Element GR.B X-42 X-46 X-52 X-56 X-60 X-65 X-70 Maxmum variation on agreed composition (see 6.1.1) Note C Mn Si P S V

9 Maximum permitted alloy content, wt% Element GR.B X-42 X-46 X-52 X-56 X-60 X-65 X-70 Maxmum variation on agreed composition (see 6.1.1) Note Nb Ti Cr Mo Ni Cu Al N B Ca CE Pcm Note: 1) For HFW pipes, solphur content shall not exceed 0.005% 2) V + Nb + Ti shall not exceed 0.12%. 3) Cr + Mo + Ni + Cu shall not exceed 0.6%. 4) The total Al : N ratio shall not be less than 2 : 1. 5) CE=C + Mn/6 + (Cr+Mo+v)/5 + (Ni+Cu)/15 (in case of carbon content greater than 0.12%) 6) Pcm= c + Si/30 + (Mn+Cu+Cr)/20 + Ni/60 +Mo/15 + V/10 + 5B (in case of carbon content less than or equal to 0.12%) CHEMICAL REQUIREMENTS FOR PRODUCT ANALYSIS BY PERCENTAGE OF WEIGHT (SOUR SERVICES) Maximum permitted alloy content, wt% Element GR.B X-42 X-46 X-52 X-56 X-60 X-65 X-70 Maxmum variation on agreed composition (see 6.1.1) Note C Mn Si P S V Nb Ti Cr Mo Ni Cu Al

10 Maximum permitted alloy content, wt% Element GR.B X-42 X-46 X-52 X-56 X-60 X-65 X-70 Maxmum variation on agreed composition (see 6.1.1) Note N B Ca CE Pcm Note: 1) For SAW pipes in X-70 grade the maximum MN content may be increased to 1.4 wt%. 2) V + Nb + Ti shall not exceed 0.15%. 3) Cr + Mo + Ni + Cu shall not exceed 0.60%. 4) The total Al : N ratio shall not be less than 2 : 1. 5) Calcium shall be 2 times sulphur content for sulphur in the range %. 6) CE=C + Mn/6 + (Cr+Mo+v)/5 + (Ni+Cu)/15 (in case of carbon content greater than 012%) 7) Pcm= c + Si/30 + (Mn+Cu+Cr)/20 + Ni/60 +Mo/15 + V/10 + 5B (in case of carbon content less than or equal to 0.12%) Available Sizes of Line Pipes Nominal Pipe Size OD (mm) Wall Thickness NPS DN D SHC30 STD SCH40 SCH60 SCH80s XS SCH80 SCH100 SCH120 SCH160 1/ / / / / / / / /

TUBING AND CASING PIPE : APL SPEC 5CT Application: Tubing is used to extracting petroleum and natural gas from a well. Casing serves as walls of well.

11 TUBING AND CASING PIPE : APL SPEC 5CT Application: Tubing is used to extracting petroleum and natural gas from a well. Casing serves as walls of well. Technology Tolerance Outside Diameter ltemm Pipe Body coupling Tolerance D mm±0.79mm D mm +1.0%D-.5%D ±1%D Wall Thickness 0,-12.5%t Weight Single Lengths +6.5%-3.5% Carload Lots 0,-1.75% Mechanical Properties: Yield Strength Tenslle Strength Hardness Allcwable Hardness min max min max Variation Psi Mpa Psi Mpa Psi Mpa HRC BHN HRC J55 55, , , K55 55, , , N , , , N80Q 80, , , M65 65, , , L , , , C , , , C , , , C95 95, , , T , , , T , , , P , , ,

12 Chemical Composition (%) Chemical Composition% C Mn Mo Cr Nl Cu P S Si min max min max min max min max max max max max Max J K N N80Q M L C NL - NL C C T T P Length (Range 1) (Pange 2) (Pange 3) Tubing m m m Casing m m m Pup Joint 0.5m-6.0m (2FEET-20FEET) Available sizes For tubing Size Designation Outside Diameter Wall Thickness Type of End Finish In mm In mm J55 L80-1 N80 C90 T95 P PI " PNUI PNUI PNUI PNUI PNUI PU PU PU PU PU PU 10

Size Designation Outside Diameter Wall Thickness Type of End Finish In mm In mm J55 L80-1 N80 C90 T95 P110 2.375 60.32 0.167 4.24 PN PN PN PN PN - 2.375 60.32 0.19 4.

13 Size Designation Outside Diameter Wall Thickness Type of End Finish In mm In mm J55 L80-1 N80 C90 T95 P PN PN PN PN PN PNU PNU PNU PNU PNU PNU 2 3/8" PNU PNU PNU PNU PNU P - P P PU - PU PU PNU PNU PNU PNU PNU PNU PNU PNU PNU PNU PNU 2 7/8" PNU PNU PNU PNU PNU PU - PU PU P - P P P - P P PN PN PN PN PN PNU PNU PNU PNU PNU PNU PN PN PN PN PN - 3 1/2" PNU PNU PNU PNU PNU P - P P P - P P P - P P - 4" PN PN PN PN PN PU PU PU PU PU PNU PNU PNU PNU PNU P - P P P - P P - 4 1/2" P - P P P - P P P - P P P - P P - Note: P Plain-end; N Non upset; U External upset; T&C Threaded and coupled 11

14 For casing Size Weight Outside Wall Type of End Finish Designation Designation Diameter Thickness In Mm In mm J55/K55 L80-1 N80 C90 C95 T95 P110 M PS PSB /2" PSLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PS PSLB PSLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PS PSLB PSLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB 5 /2" P - P P - P P - P P - P P - P P - P P - P PSLB /8" PSLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PS PS PSLB PLB PLB PLB PLB - - PLB PSLB PLB PLB PLB PLB PLB PLB PLB 7" PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB 12

15 Size Weight Outside Wall Type of End Finish Designation Designation Diameter Thickness In Mm In mm J55/K55 L80-1 N80 C90 C95 T95 P110 M PSLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB 7 5/8" PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PS PSLB /8" PSLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PSLB PSLB PSLB PLB PLB PLB PLB PLB PSLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB 9 5/8" PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB PLB P - P P - P P - P P - P PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB 10 3/4" PSB PSB PSB PSB PSB PSB PSB PSB - PSB PSB PSB - PSB PSB P - P P - P P - P

Size Weight Outside Wall Type of End Finish Designation Designation Diameter Thickness In Mm In mm J55/K55 L80-1 N80 C90 C95 T95 P110 M65 42 11.75 298.45 0.333 8.46 - - - - - - - - 47 11.75 298.45 0.375 9.

16 Size Weight Outside Wall Type of End Finish Designation Designation Diameter Thickness In Mm In mm J55/K55 L80-1 N80 C90 C95 T95 P110 M PSB PSB 11 3/4" PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB P P P P P P P P P P P P PSB PSB 13 3/8" PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB PSB " PSB PSB PSB Possible PSB P P P - Note: P---Plain end; S---Short round thread; L---Long round thread; B---Buttress thread; L & M & H BOILER TUBE : GB3087: Seamless Steel Tubes for Low and Medium Pressure Boiler Application: For manufacturing heating-pipelines, containers, steaming pipelines of low or medium pressure boilers (p 450, work pressure 5.88 Mpa) Technology: Chemical Composition & Mechanical Properties Chemical Composition (%) Mechanical Properties C Si Mn P, S Cr Cu Ni Mo, V Tensie Strength Yeid Strength Eongaion (%) GB ~ ~ ~ / 335~ ~ ~ ~ / 410~

17 : GB5310: Seamless Steel Tubes And Pipes for High Pressure Boiler Application: For manufacture heating-pipelines, containers, coal-saving devices, super heaters and reheaters of high pressure boilers(p>9.8mpa,450 <T<650 ) Steel : 20G 20MnG 15MnG 15MnG 12Cr2MnG 12Cr1MoVG (etc),other grade can also be provided after consulting with customers. Technology: Chemical Composition & Mechanic al Properties Chemical Composition (%) Mechanical Properties C Si Mn P S Cr No V Tensle Strength Yield Strength Elongation (%) GB G 0.17~ ~ ~ / / / 410~ MoG 0.17~ ~ ~ / / / MoG 0.12~ ~ ~ / 0.25~0.35 / 450~ Cr1MoG 0.12~ ~ ~ ~ ~0.55 / 440~ Cr2MoG 0.08~ ~ ~ ~1.20 / 450~ Cr1MoVG 0.08~ ~ ~ ~ ~ ~ ~ : ASTM A192/A192M-02: Seamless Carbon Steel Boiler Tubes for High-Pressure Application: For seamless carbon steel boiler and super heater tubes for high-pressure service Steel : A192 SA192 Technology Chemical Composition & Mechanical Properties Steel Tensile Strength Yield Strength (%) Elongation ASTM A192/ASME SA192 A192/SA Steel Chemical Composition (%) C Si Mn P S Cr Mo Cu Ni V ASTM A192/ ASME SA192 A192 / SA ~ ~ / / / / 15

18 : ASTM A210, ASME SA210: Seamless Medium Carbon Steel Tubes for Boiler and Super heater Application: For manufacturing wall panel, economizer, super heater and steam pipeline of boilers Steel : A-1 C Technology Chemical Composition & Mechanical Properties Steel Tensle Strength Yield Strength (%) Elongation ASTMA210 ASME SA210 A C Steel Chemical Composition (%) C Si Mn P S Cr Mo Cu Ni V ASTM A210 ASME SA210 C ~ / / / / / A / / / / / : ASTM A179, ASME SA179, Cold-Drawn Seamless low Carbon Steel Tubes for Boiler and Super heater Application: for heater, cooler and heat treatment exchanger Steel : A179, SA179 Technology Chemical Composition & Mechanical Properties Steel Tensle Strength Yield Strength (%) Elongation ASTM A179/ASME SA179 A179/SA Steel Chemical Composition (%) C Si Mn P S Cr Mo Cu Ni V ASTM A179 / ASME SA179 A179 / SA ~0.18 / 0.27~ / / / / / 16

: DIN17175/EN10216-2: Heat-resisting seamless steel tube for the pipelines of boiler industry Application: It is used for the pipelines of boiler industry. Steel : St35.8, St45.

19 : DIN17175/EN : Heat-resisting seamless steel tube for the pipelines of boiler industry Application: It is used for the pipelines of boiler industry. Steel : St35.8, St45.8, 15Mo3, 195GH, P235GH, P265GH, 20MnNb6, 16Mo3 Technology Chemical Composition & Mechanical Properties DIN17175 Chemical Composition Mechanical Property C Si Mn P S Cr Mo Tensle Strength Yield Strength Elongation (%) St ~ ~ / / 360~ DIN17175 St ~ ~ / / 410~ Mo3 0.12~ ~ ~ / 0.25~ ~ EN Chemical Composition Mechanical Property C Si Mn P S Cr Mo Tensle Strength Yield Strength Elongation (%) C 195GH ~ P235GH ~ EN P265GH ~ MnNb ~ ~ ~ Mo3 0.12~ ~ ~ ~ : JIS G3461/ G3462: Carbon steel tubes for boiler and heat exchanger/ alloy steel tubes for boiler and heat exchanger tubes Application: JIS G3461 is for Carbon steel tubes for boiler and heat exchanger JIS G3462 is for alloy steel tubes for boiler and heat exchanger tubes Steel : STB 340,410,510; STBA12, 13, 20,22,23,24 Technology 17

Chemical Composition & Mechanical Properties JIS G3461 JIS G3462 Steel Tensile Strength (Min) Yield Strength ) (Min) STB 340 340 175 STB 410 410 255 STB 510 510 295 STBA12 382 206 STBA13 412 206

20 Chemical Composition & Mechanical Properties JIS G3461 JIS G3462 Steel Tensile Strength (Min) Yield Strength ) (Min) STB STB STB STBA STBA STBA STBA STBA STBA Chemical Composition C Si Mn P S Cr Mo STB JIS G3461 STB STB STBA STBA JIS G3462 STBA STBA STBA STBA : JIS G3454\G3455\G3456 Application: JIS G3454 is for carbon steel pipes for pressure service JIS G3455 is for carbon steel pipes for high pressure service JIS G3456 is for carbon steel pipes for high temperature service Steel : STPG 370\410; STS370\410\480; STPT370\410\480 Technology Chemical Composition & Mechanical Properties JIS G3454 JIS G3455 JIS G3456 Steel Tensile Strength (Min) Yield Strength (Min) STPG STB STS STS STS STPT STPT STPT

21 standard Steel grade chemical composition C Si Mn P S JIS G 3454 STPG ~ STPG ~ STS ~ ~ JIS G 3455 STS ~ ~ STS ~ ~ STPT ~ ~ JIS G 3456 STPT ~ ~ STPT ~ ~ GAS CYLINDER TUBE & PIPE : EN10291/EN10083/ASTMA519/GB18248 Application: for gas cylinder Steel : 34CrMo4/4135/4130/30CrMo/34Mn2V/35CrMo/37Mn Technology Chemical Composition & Mechanical Properties Tensile Strength(min),Mpa Yield strength Elongation % WT 8 8<WT 20 2<WT 50 5<WT 80 WT 8 8<WT 20 20<W 50 5<WT 80 WT 8 8<WT 20 2<WT 50) 5<WT 80 EN CrMo ASTMA CrMo GB Mn2v CrMo standard Chemical composition grade C Si Mn P S P+S Mo Cu Cr Ni Al V EN CrMo4 0.30~ ~ ~ EN CrMo4 0.30~ ~ ~ ASTMA ~ ~ ~ ~ ~ ~ ~ ~ CrMo 0.26~ ~ ~ ~ Mn2V 0.30~ ~ ~ GB CrMo 0.32~ ~ ~ ~ Mn 0.34~ ~ ~

QUALITY SECTION CHART Billet inspection Acid washing, cleaning Cutting Visual inspection 睬坶觸陜 Inspection of raw material Inspection after acid washing Scraping Re-inspection Heating Piercing 盲悗 Pipe

22 QUALITY SECTION CHART Billet inspection Acid washing, cleaning Cutting Visual inspection 睬坶觸陜 Inspection of raw material Inspection after acid washing Scraping Re-inspection Heating Piercing 盲悗 Pipe rolling Head driving Inspection Repairing Acid washing, washing, phosphorize 悗 Inspection Re-inspection Repairing Saponify Cold-drawing 盲悗 Inspection Head driving (head rolling) Annealing Ending cutting Inspection 悗 NDT INSPECTION 陌薔蜿疫 Hydrostatic Test 鰀春嗎 Marking Coating Packing into warehouse Inspection of raw material, by Mechanical and Chemical Room Including: chemical properties, size and shape of steel billet, surface of steel billet, macroscopic examination, nonmetallic material examination, and crystal grains examination. Inspection of surface quality of material after acid cleaning, by workshop Hot inspection of hollow billet after hot piercing, by Workshop Inspection of the whole production process, in workshop Mechanical properties of the production, including yield, tensile strength, elongation, impact value, in Tensile Test Room Straightening, cutting, and then inspected by worker, and then do NDT in Exam Room Inspected with Optical Spectrum Analyzer, to check if there is any other grade of steel mixed. 20

23 QC & QA AND CERTIFICATION 21

24 Add: 17th Floor, No.4 Building, Zhuyu Business Center, Shouti South Road, Haidian District, Beijing , China. Tel: Fax: / toni@chinacmax.com

SEAMLESS STEEL PIPE FLOW CHART

SEAMLESS STEEL PIPE FLOW CHART Seamless steel pipe is a long steel material with hollow section but without joint line. There are two kinds: cold-drawn and hot rolled. It is mostly used in transportation of oil, natural gas, coal gas,