
Precision seamless steel pipe description
Precision seamless tube is a kind of high precision steel tube material after cold drawing or hot rolling. Because the inner and outer walls of precision steel tube have no oxide layer, withstand high pressure without leakage, high precision, high finish, cold bending without deformation, flaring, flattening without cracks and so on, it is mainly used to produce pneumatic or hydraulic components, such as cylinder or cylinder, can be seamless tube. There are also chemical components of welded pipe precision steel pipe, carbon C, silicon Si, manganese Mn, sulfur S, P, chromium Cr, seamless steel pipe and round steel and other solid steel, in bending and torsional strength at the same time, light weight, is a kind of economic section of steel, widely used in the manufacture of structural parts and mechanical parts.
Precision seamless steel pipe advantage
1. High precision, saving the loss of mechanical processing users.
2. Many specifications, wide range of applications.
3. Cold rolled products have high precision, good surface quality and good straightness.
4. The inner diameter of the steel pipe can be made into hexagonal shape.
5. The steel pipe has better performance and the metal is relatively dense.
Precision seamless steel pipe application
The inner and outer walls of the steel pipe have no oxide layer, withstand high pressure, no leakage, high precision, high finish, cold bending without deformation, flaring, flattening without cracks, surface anti-rust treatment, It is widely used in hydraulic system steel pipe, injection molding machine steel pipe, hydraulic press steel pipe, Marine manufacturing steel pipe, EVA foaming oil pressure machinery, precision oil pressure cutting machine steel pipe, shoe making machinery, hydraulic equipment, high pressure oil pipe, hydraulic oil pipe, clamp joint, steel pipe joint, rubber machinery, forging machinery, die casting machinery, engineering machinery, concrete pump car with high pressure steel pipe, sanitation car Automobile industry, shipbuilding industry, metal processing, military industry, diesel engine, internal combustion engine, air compressor, construction machinery, agriculture and forestry machinery, can completely replace the same standard of imported seamless steel pipe.
Precision seamless steel pipe chemical composition
Grade | chemical composition % | |||||
C | Si | Mn | S | P | Cr | |
10# | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | |
20# | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | |
35# | 0.32-0.39 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | |
45# | 0.42-0.50 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | |
40Cr | 0.37-0.44 | 0.17-0.37 | 0.50-0.80 | ≤0.035 | ≤0.035 | 0.08-1.10 |
Precision seamless steel pipe mechanical property
standard | Grade | ||||
GB/T3639-2000 | Cold Work/Hard (BK) | Cold work/Soft BKW | |||
GB/T3639-2000 | strength of extension | stretch | strength of extension | stretch | |
σb(MPa) | δ5(%) | σb(MPa) | δ5(%) | ||
GB/T3639-2000 | |||||
GB/T3639-2000 | 10# | ≥410 | ≥6 | ≥375 | ≥10 |
GB/3077-1988 | 20# | ≥510 | ≥5 | ≥450 | ≥8 |
GB/T3639-2000 | 35# | ≥590 | ≥4 | ≥550 | ≥6 |
GB/T3639-2000 | 45# | ≥645 | ≥4 | ≥630 | ≥5 |
GB/T3639-2000 | 40cr | ≥784 | ≥12 | ||
GB/T3639-2000 | 37Mn5 | ≥784 | ≥12 |
Precision seamless steel pipe specification
Product Name | Precision Seamless Steel Pipe |
Technique | Hot Rolled/Cold Rolled/Cold Drawn |
Surface Treatment | Black Painted, Galvanized, Natural, Anticorrosive 3PE coated,polyurethane foam Insulation |
End | Bevel end(>2"), Plain (≤2"),with plastic cap, with screwed and socket |
Material | 10# 20# 45# Q345 16Mn 15CrMo 30CrMo 1Cr5Mo 40Cr 42CrMo S235JR S355JR ST37 ST42 ST52 ST35 A106 A53 A179 1020 T5 42CrMo4 25CrMo4 |
Standard | ASTM A106 ASTM A53 ASTM A179 ASTM A210 ASTM A213 GB/T3639 DIN 2448 DIN1629 DIN1626 DIN2391 DIN2444 EN10025 |
Outside Diameter | 10mm-1020mm or as your request |
Length | Single random length/double random length 5m-14m 2-12m |
Thickness | 2mm-80mm or as your request |
Application | Oil pipe line, Drill pipe, Hydraulic pipe, Gas pipe, Fluid pipe, |


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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.


Exporting country
We are a well known worldwide supply and export Precision Steel 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.