Large diameter seamless steel pipe description

Large diameter seamless steel pipes are mainly produced by hot-rolled large-diameter seamless steel pipes and hot-expanded-diameter seamless steel pipes.
Due to their different manufacturing processes, seamless steel pipes are divided into two types: hot-rolled (extruded) seamless steel pipes and cold-drawn (rolled) seamless steel pipes. Cold drawn (rolled) tubes are divided into two types: round tubes and special-shaped tubes.

The main application of large diameter seamless steel pipe: waterworks, petrochemical industry, chemical industry, electric power industry, agricultural irrigation, urban construction. Used for liquid transportation: water supply and drainage. For gas transportation: gas, steam, liquefied petroleum gas. For structural purposes: as piling pipes, as bridges; pipes for wharves, roads, building structures, etc.


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 large diameter seamless pipe

Grade Chemical Composition (%)
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,
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,
N:0.24-0.32

Mechanical properties of large diameter seamless pipe

Grade Mechanieal Performece
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
2507 δb/MPa:800-1000,δ0.2/MPa:≥550

Product specifications of large diameter seamless pipe

Product Name

Product specifications of large diameter seamless pipe

Standard

DIN2391, EN10305, ASTM A519, GB/T 3639-200

Material

20#, 45#, Q345 27simn 304 316 321 310 2205

Size

OD: 5-1500mm WT: 0.5-50 Length: 3-9m

Test

Tensile Test, Hydraulic Test, Eddy Current Test etc

Application

hydraulic cylinder, swivel crane, injection machine and so on

Conservation

anti rust oiled inside and outside surface, plastic caps in both ends

Package

bundle with steel strip and knitting strip, or wooden case

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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

Seamless steel pipe price

oil and gas

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

good Seamless steel pipe

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.

cheap Seamless steel pipe

marine

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

Seamless steel pipe size

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

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