seamless steel pipe supplier

Seamless Steel Pipe Description

Seamless steel pipes are perforated from whole round steel, and steel pipes without welds on the surface are called seamless steel pipes. According to the production method, seamless steel pipes can be divided into hot-rolled seamless steel pipes, cold-rolled seamless steel pipes, cold-drawn seamless steel pipes, extruded seamless steel pipes, and top pipes. According to the cross-sectional shape, seamless steel pipes are divided into two types: round and special-shaped. Special-shaped pipes include square, oval, triangular, hexagonal, melon seed, star, and finned pipes. The maximum diameter is 900mm and the minimum diameter is 4mm. According to different purposes, there are thick-walled seamless steel pipes and thin-walled seamless steel pipes. Seamless steel pipes are mainly used as petroleum geological drilling pipes, cracking pipes for petrochemical industry, boiler pipes, bearing pipes, and high-precision structural steel pipes for automobiles, tractors, and aviation.

There are two main production processes for seamless steel pipes (cold rolling and hot rolling):①Main production process of hot-rolled seamless steel pipe (△main inspection process):

Tube billet preparation and inspection△→tube billet heating→perforation→tube rolling→pipe reheating→fixed (reduced) diameter→heat treatment△→finished tube straightening→finishing→inspection△(non-destructive, physical and chemical, bench inspection)→in storage ②Main production process of cold-rolled seamless steel pipe:

Blank preparation → pickling and lubrication → cold rolling (drawing) → heat treatment → straightening → finishing → inspection → storage

Seamless steel pipe Product line

KUAIMA steel company has more than ten years of experience in diversified operations and multi-product transactions, involving round bar, ship plate, seamless pipe, plate, coil, wire, bright bar, pipe fittings and a wide range of carbon steel, alloy steel And more product sizes of stainless steel materials, these products we produce meet national and international quality standards, such as ASTM, ASME, DIN, JIS, ISO, etc. The company has 25 production lines for various products, with an annual output of 500,000 tons, and is committed to Provide high-quality steel products and provide supporting services and solutions for global customers. Welcome to KUAIMA steel company.

Chemical composition of Seamless steel pipe

Grade	Chemical Composition (%)
Grade	C	Si	Mn	P	S	Ni	Cr	Other
201	≤0.15	≤1.00	5.5/7.5	≤0.060	≤0.030	3.5-5.5	16.0-18.0	-
202	≤0.15	≤1.00	7.5/10	≤0.060	≤0.030	4.0-6.0	17.0-19.0	-
304	≤0.08	≤1.00	≤2.00	≤0.045	≤0.03	8.0-11.0	18.00-20.00	-
316	≤0.08	≤1.00	≤2.00	≤0.045	≤0.03	10.00-14.00	16.0-18.0	Mo:2.00-3.00
316L	≤0.03	≤1.00	≤2.00	≤0.045	≤0.03	10.00-14.00	16.0-18.0	Mo:2.00-3.00
321	≤0.08	≤1.00	≤2.00	≤0.045	≤0.03	9.00-12.00	17.0-19.0	Ti:5C-0.70
410	≤0.15	≤1.00	≤1.25	≤0.060	≤0.030	≤0.060	11.5-13.5	-
430	≤0.12	≤1.00	≤1.25	≤0.040	≤0.03	-	16.00-18.00	-
2205	≤0.03	≤1.00	≤2.00	≤0.04	≤0.03	4.5-6.5	21.00-24.00	Mo: 2.5-3.5,
2205	≤0.03	≤1.00	≤2.00	≤0.04	≤0.03	4.5-6.5	21.00-24.00	N:0.08-0.2
2507	≤0.03	≤0.80	≤1.20	≤0.035	≤0.02	6.00-8.00	24.00-26.00	Mo: 3.0-5.0,
2507	≤0.03	≤0.80	≤1.20	≤0.035	≤0.02	6.00-8.00	24.00-26.00	N:0.24-0.32

Mechanical properties of Seamless steel pipe

Grade	Mechanieal Performece
Grade	Hardness
201	HB≤241,HRB≤100, HV≤240
202	HRB≤195, HV≤218
304	HB≤187,HRB≤90,HV≤200
316	HB≤187, HRB≤90 HV≤200
316L	HB≤187, HRB≤90 HV≤200
321	HRB≤90, HV≤200
410	HB≤183, HRB≤88 HV≤200
430	HB≤183, HRB≤88 HV≤200
2205	Y.S.≥450Mpa, T.S.≥620Mpa
2205	Y.S.≥450Mpa, T.S.≥620Mpa
2507	δb/MPa:800-1000,δ0.2/MPa:≥550
2507	δb/MPa:800-1000,δ0.2/MPa:≥550

Product specifications of Seamless steel pipe

Seamless Steel Pipe
Material	ASTMA106AASTMA106B,ASTMA106C,ASTMA179,ASTMA192 ASTMA210
	ASTM A53A,ASTM A53B,ASTMA178C
	10#,20#,45#,Q235,Q345,Q195,Q215,Q345C,Q345A
	ST37,ST37-2,DIN 1629 ST35,DIN 1629 ST45,DIN 17175 ST35.8,DIN 17175DIN 17175
	16Mn,Q345B,T1,T2,T5,T9,T11,T12,T22,T91,T92,P1,P2,P5,P9,
	P11,P12,P22,P91,P92,15CrMO,Cr5Mo,10CrMo910,12CrMo,
	13CrMo44,30CrMo,A333 GR.1,GR.3,GR.6,GR.7,etc
Size	Outside Diameter：21.3-609.6mm
	Thickness ：1.65mm-59.54mm
Technique	Cold Rolled/Hot Rolled/cold drwan
Standard	API 5CT, 5L; ASTM, BS, JIS, DIN
Packing	Steel strip packed. Standard Export Seaworthy Package.Suit forall kinds of transport,or as required
Qualification	independent import and export qualifications
Main market	Asia, India, Middle East, America, Europe
Application	Widely used in Structure, Accessorize,Construction,Fluid transportation,machinery parts,the stress parts of the automobile tractor parts and so on
Payment Terms	30% TT deposit and 70% LC the balance
Delivery time	8-15days upon receipt of 30% deposit.

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Seamless steel pipe application

Seamless steel pipes are mainly used in chemical, petrochemical, marine engineering, seawater pipelines, seawater desalination and other industries, nuclear engineering, paper and pulp industry

oil and gas

Kuaima Steel provides a complete set of equipment and installations for drilling, transportation and storage in the oil and gas industry.

energy

Kuaima Steel serves the entire service cycle of power generation and synchronous activities in design, construction, repair and maintenance.

construction

Kuaima Steel provides comprehensive products and services for infrastructure, bridges, pipelines, etc.

marine

Kuaima Steel is a trusted supplier for subsea to surface operations and shipbuilding operations.

We supply and export Seamless steel pipe in following countries

Malaysia, United Arab Emirates, Indonesia, Saudi Arabia, Iran, Qatar, India, China, United Kingdom, Singapore, Canada, Thailand, Korea, Turkey, Philippines, Egypt, Germany, Italy, Japan, Russia, Vietnam, Australia, South Africa , Portugal, Morocco, Costa Rica, Kazakhstan, Netherlands, Mexico, Brazil, France, Spain, Nigeria, Bangladesh, Kuwait, Iraq, Ukraine, Poland, Jordan, Romania, Oman, Hong Kong, Venezuela, Colombia, Norway, Chile, Te Trinidad and Tobago, Greece, Czech Republic, Belgium, Sri Lanka, Cyprus, Angola, Myanmar (Burma), United Kingdom, Canada, Korea, Thailand, Netherlands, Spain, Turkey, Australia, Mexico, Pakistan, Vietnam, Brazil, Philippines, France, Taiwan, Poland, South Africa, Russia, Nigeria, Kuwait, Czech Republic, Norway, Romania, Egypt, Oman, Sweden, Belgium, Hong Kong, Israel, Colombia, Switzerland, Denmark, Finland, Argentina, Venezuela, Peru, Ukraine , Chile, Bangladesh, Portugal, Ireland, Austria, Algeria, Greece, Iraq, New Zealand, Slovakia, Hungary, Kazakhstan, Slovenia, Lithuania, Serbia, Sri Lanka, Bahrain, Bulgaria, Morocco, Tunisia, Croatia, Jordan, Ecuador, Te Trinidad and Tobago, Estonia, Azerbaijan, Ghana, Lebanon, Cyprus, Dominican Republic, Latvia, Libya, Costa Rica, Cambodia, Macedonia (FYROM), Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan Belarus, Jamaica, Palestine, Turkmenistan and other countries