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LARGE DIAMETER SEAMLESS PIPE
LARGE DIAMETER SEAMLESS PIPE

LARGE DIAMETER SEAMLESS PIPE

Large diameter thick-walled seamless steel pipe refers to a pipe that out diameter is above 159mm. large diameter coated steel pipe is coated plastic made ​​on the basis of large diameter spiral welded pipe and high frequency welded pipe, the maximum nozzle diameter up to 1200mm.
Size:Out diameter: 6mm~2500mm;Wall Thickness: 1mm~150mm;Length:1m~12m or customize
Standard & Grade:ASME, ASTM, API, EN, DNV etc
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Technical data
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Product introduction
Keywords(pipe type):carbon steel pipe,Seamless Steel Pipe, Seamless Stainless Steel Pipe, Steel Piping;Large Diameter Seamless Pipe
Size:Out diameter: 6mm~2500mm;Wall Thickness: 1mm~150mm;Length:1m~12m or customize
Standard & Grade:ASME, ASTM, API, EN, DNV etc
Ends :Plain End,Bevel End,Square Cut
Delivery:Within 30 days and Depends on your order quantity
Payment:TT, LC , OA , D/P
Packing:Bundle or bulk , seaworthy packing or for the client's requirement
Usage:For conveying gas, water and oil either in the oil or natural gas industries
Description
Large diameter thick-walled seamless steel pipe refers to a pipe that out diameter is above 159mm. large diameter coated steel pipe is coated plastic made ​​on the basis of large diameter spiral welded pipe and high frequency welded pipe, the maximum nozzle diameter up to 1200mm. The large diameter seamless pipes according to the different needs of the coating of polyvinyl chloride (PVC), polyethylene (PE), epoxy (EPOZY) and other various properties of plastic coating, good adhesion, corrosion resistance , is resistant to acids, alkalis and other chemical corrosion. Non-toxic, does not rust, wear resistance, impact resistance, permeability, pipe a smooth surface will not adhere to any substance, can reduce the transmission of resistance, increase traffic and transport efficiency, reduce the delivery pressure losses. Solvent-free coating, no oozing substance, and thus will not the transmission medium of pollution in order to ensure the purity and health of the fluid at -40 ℃ to 80 ℃ range of hot and cold cycles of the use, no aging, no cracking, which can be used in the cold zone and other harsh environments. The large diameter seamless pipes are widely used in tap water, natural gas, petroleum, chemical, pharmaceutical, telecommunications, power, marine and other engineering fields.
Technical data
 
Name Specification
Seamless 6 * 1-1.5-2.5
Seamless 14 * 1.5-2.5-3
Seamless 16 * 1.5-2.5-3
Seamless 18 * 2-3-4-5
Seamless 20 * 2-2.5-3-6
Seamless 24 * 2.5-3-4-5-6
Seamless 25 * 2.5-3-4-5-6
Seamless 28 * 3-3.5-4-5-6
Seamless 32 * 3.5-4-5-6-8
Seamless 34 * 4-5-6-8
Seamless 36 * 3.5-5-6-8
Seamless 38 * 4.5-6-7-8-10
Seamless 39 * 3.5-5-6-8
Seamless 42 * 3.5-4-5-6-7-8-9-10
Seamless 45 * 3.5-4-5-6-7-8-9-10
Seamless 48 * 3.5-4-5-6-7-8-9-10
Seamless 51 * 3.5-4-5-6-7-8-9-10
Seamless 56 * 3.5-4-5-6-7-8-9-10
Seamless 57 * 3.5-4-5-6-7-8-9-10
Seamless 60 * 3.5-4-5-6-7-8-9-12-14
Seamless 63 * 3.5-4.5-5-6-7-8-9-12-14
 
Name Specification
Seamless 70 * 4.5-5-6-7-8-9-10-12-15-16
Seamless 73 * 4-4.5-5-6-7-8-9-10-12-15
Seamless 78 * 4-4.5-5-6-7-8-9-10-12-14
Seamless 83 * 4.5-6-10-12-14-16-18-20
Seamless 89 * 4.5-6-10-12-14-16-18-20
Seamless 95 * 4.5-8-10-12-14-16-20
Seamless 102 * 4.5-5-7-8-10-12-14-16-18-30
Seamless 108 * 4.5-5-7-8-10-12-14-18-20-22
Seamless 114 * 4.5-5-6-7-10-12-16-18-20
Seamless 121 * 4.5-5-6-7-8-10-12-14-16-18-20
Seamless 127 * 4.5-5-6-7-8-10-12-14-16-18-20
Seamless 133 * 4-5-6-8-12-15-18-20-25-30
Seamless 140 * 6-8-10-12-14-16-18-20-22-25
Seamless 148 ** 6-8-10-12-14-16-18-20-30
Seamless 150 * 6-8-10-12-14-17-20-25-30
Seamless 153 * 4.5-6-8-10-12-14-20-25-30
Seamless 168 * 8-10-12-14-20-25-30
Seamless 180 * 8-12-16-25-30-45
Seamless 184 * 6-8-12-16-20-25-30-40-48
Seamless 200 * 6-7-10-15-20-26-30-45
Seamless 219 * 6-8-12-16-18-20-25-30-45-50-60
 
Name Specification
Seamless 245 * 8-10-14-17-20-22-30-40
Seamless 273 * 7-8-10-16-18-20-25-30-45-60
Seamless 299 * 8-12-20-35-50
Seamless 335 * 8-12-14-18-22-25-45-60
Seamless 355 * 8-10-20-25-30-40-52
Seamless 377 * 8-12-16-20-24-28
Seamless 402 * 10-15-20-25-30-35-40
Seamless 406 * 10-20-25-28-35-40
Seamless 428 * 10-12-14-16-20-25-30-35-40
Seamless 480 * 10-12-14-16-18-20-25-30-40-50
Seamless 530 * 10-12-14-16-18-20-30-40
Seamless 560 * 10-14-16-20-25-30-40-50-60
Seamless 600 * 10-14-16-20-25-30
Seamless 610-10-11-18-20-25-30-45-66
Seamless 630 * 10-30-40-45-55-75
Seamless 650 * 15-20-30-45-55-75
Seamless 710 * 10-20-30-45-65-75
Seamless 720 * 10-20-40-55-60-75-95-100
Seamless 760 * 20-30-40-50-60-70
Seamless 850 * 20-25-35-45-65
Seamless 960 * 481 020 * 50-60-80
Standard
Material API SPEC 5L A25, A25A, B, X42, X46, X52, X56, X60, X65, X70, X80, X90, X100
  ASTM A53/ASME SA53 Grade A, Grade B,
  ASTM A106/ASME SA106 Grade A, Grade B, Grade C
  ASTM A210/ASME SA210 Grade A-1, Grade C
  ASTM A500/ASME SA500 Grade A, Grade B, Grade C, Grade D
  ASTM A501/ASME SA501 Grade A, Grade B
  ASTM A556/ASME SA556 Grade A2, B2, C2
  BS 3059 320, 360, 440, 620-460, 629-590, 762
  EN 10216-1&2 P195, P235, P265
  EN10297-2 E235, E275, E315, E355a, E470, C22E, C35E, C45E
  EN10210-1 S235JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H
  DIN 1629 st37.0, st44.0, st52.0
  DIN 1630 st37.4, st44.4, st52.4
  DIN 2391 st35, st45, st52
  DIN 17175 st35.8, st45.8
  JIS G3429 STH11, STH 12
  JIS G3444 STK290, STK400, STK500, STK490, STK540
  JIS G3454 STPG370, STPG410
  JIS G3455 STS370, STS410, STS480
  JIS G3456 STPT370, STPT410, STPT480
  JIS G3460 STPL380
  JIS G3461 STB340, STB410, STB510
  JIS G3464 STBL380
  JIS G3475 STKN400W, STKN400B, STKN490B
Size Out diameter: 6mm~2500mm;Wall Thickness: 1mm~150mm;Length:1m~12m or customize
Technique 1) Hot Rolled
2) Cold Drawn
3) Cold Rolled
Package 1) Export standard package
2) bundled wooden box
3) suit for all kinds of transport, or be required

Painting & Coating
The traditional annealing :Open furnace—Oxygen atmosphere—form Scale, tarnish the material,For more than 12m tubes this method is hard to clean inner surface.

A special bright annealing:Closed furnace—Intert atmosphere use noble gases(Nitrogen and argon)Preventing Oxygen to contact with material —Surface finish is clean,bright and precision,which is an excellent starting point for further process,like electric-polishing and mechanical polishing. For more than 12m tubes,this method is much cleaner smoother on both inner and outer surface.

Packing & Loading
PVC packing, carton packing, or as customer request woodeng case.
Large diameter seamless steel pipe have to arrive safely, quickly and without damages at their destination in any part of the world. Packing is also an essential part of quality assurance.











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