large diameter seamless pipe

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Steel Pipe

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hydraulic steel pipe

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Large diameter seamless steel pipe means outside diameter more than 100MM and the wall thickness is greater 0.2 than the outer diameter of the pipe, Large-diameter seamless steel tube is made from solid tube ingot or the perforation capillary, then through hot rolling and cold rolling or cold dial.Large diameter seamless steel pipe by cold drawing, cold-rolled steel products, such as cold forming, heat treatment and without any direct delivery of state called cold-drawn or cold-rolled condition.

large diameter seamless pipe

Large Diameter Seamless Pipe Classification

large diameter seamless pipe Classification

1、According to the production method, the seamless steel pipe can be divided into hot rolled seamless steel pipe, cold rolled seamless steel pipe, cold drawn seamless steel pipe, extrusion seamless steel pipe, pipe jacking and so on.

2、According to the section shape, the seamless steel pipe is divided into round and irregular two kinds, irregular pipe has square, oval, triangle, hexagonal, melon seed shape, star shape, with a variety of complex shapes. The maximum diameter is 900mm and the minimum diameter is 4mm.

3、According to different uses, there are thick wall seamless steel pipe and thin wall seamless steel pipe. Seamless steel pipe is mainly used for petroleum geological drilling pipe, petrochemical cracking pipe, boiler pipe, bearing pipe and automobile, tractor, aviation high-precision structural steel pipe.

Large Diameter Seamless Pipe Chemical Composition

Grade	C	Mn	P	S	Si
ASME SA573 Grade 58	0.23	0.6-0.9	0.035	0.04	0.1-0.35
ASME SA573 Grade 65	0.24	0.85-1.2	0.035	0.04	0.15-0.4
ASME SA573 Grade 70	0.27	0.85-1.2	0.035	0.04	0.15-0.4

Large Diameter Seamless Pipe Mechanical Property

Grade	Yield Strength (MPa)	Ultimate Tensile Strength (MPa)	Elongation at Break (%)
ASME SA573 Grade 58	220	415-550	21
ASME SA573 Grade 65	240	415-530	20
ASME SA573 Grade 70	290	485-620	28

Large Diameter Seamless Pipe Specification

Product Name	large diameter seamless pipe
Standard	ASME A179,JIS G3461,DIN 17175
Out Diameter	1/2"-48"(6mm-1240mm)
Wall Thickness	1mm-200mm
Length	5.8-12m ,random length or fixed length
Heat Treatment	Anneal etc
Thecnical	Hot Rolled,Cold Drawn
Package	In Bundling,In Bulk
Suface Treatment	Oil Coating,Black Painted,Varnish,Anti-Corrosion
Payment Terms	T/T,L/C
Application	1>Water Transportation 2>Supply Heat and Gas 3>Long Distance Transport Oil and Natural Gas 4>Agricultural Irrigation 5>Water Conservancy Project

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Application

Our steel products are mainly used in chemical industry, petrochemical industry, offshore, seawater pipeline, desalination plant, nuclear engineering, paper and pulp industry.

Oil and GasKuwait is a country of petroleum resources with abundant, oil factory also is very broad, respectively, the oil plant are mainly used for refining oil and oil processing.

MarineSubmarine pipelines carry such things as domestic water, waste water, electrical lines, gas lines, communication lines, and outfall or intake systems.

ConstructionBridge materials with high strength, low cost for selecting the main basis, give priority to with development of the traditional steel and concrete.

EnergyEngineering is mainly aiming at the water pollution and solid waste pollution. using the steel pipe to filtrate in order to improve the quality of water.

Our export country

We are a well known worldwide supply and export large diameter seamless pipe in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.