LARGE DIAMETER Seamless Pipe | Factory-Made Carbon Steel & Stainless Steel Pipe

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.

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

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.

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

PVC packing, carton packing, or as customer request wooden 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.