China Manufacturer 37Mn5 Material 27.4*18mm Cold Rolled Precision
Steel Pipe For Motorcycles
Outer Diameter: 16-76 mm
Thickness: 2 - 18mm
Grade: 37Mn5
Delivery Condition: BK/BKW/BKS/GBK/NBK
Technique : Cold Rolled
37Mn5 Chemical Composition
| C | Si | Mn | P | S | Cr | Ni | Cu |
| 0.34～0.39 | 0.20～0.35 | 1.25～1.50 | ≤0.025 | ≤0.015 | ≤0.15 | ≤0.20 | ≤0.20 |
Precision pipe is a high-precision, high-brightness seamless steel
pipe produced by cold drawing or cold rolling. Its inner and outer
diameters can be accurate to within 0.2mm, while ensuring bending
and torsional strength, it is light in weight, so it is widely used
in the manufacture of precision mechanical parts and engineering
structures. It is also commonly used to produce various
conventional weapons, barrels, shells, bearings, etc.
| Product Name | 37Mn5 Precision Seamless Steel Pipe |
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| Material | Carbon & Alloy |
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| Technique | Cold Rolled & Cold Drawn |
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| Standard | DIN2391,EN10305-1,GB/T3639,ASTMA106 |
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| Application | Automobiles,Motorcyles,gas springs,hydraulic machinery,construction |
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| Supply status | BK,BKS,BKW,NBK,GBK |
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| Length | 3-6.6M,random lengh or fixed lenght |
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| Surface | Oiled,Bright etc |
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| Grade | 37Mn5 |
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| Certification | ISO,SGS,BV |
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| Surface Treatment | Cold Rolled |
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| Process Service | Welding, Punching, Cutting, Bending, Decoiling |
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Product Features
Main features: There is no oxide layer on the inner and outer walls
of the steel pipe, no leakage under high pressure, high precision,
high finish, no deformation after cold bending, no cracks in
flaring and flattening.
Application
Mechanical structures, Hydraulic Equipment, Auto parts, Steel
sleeves.
| Delivery Status | Code | |
| Cold working / hard | BK | No heat treatment is carried out after the final cold working, so
that only a small deformation of the tube is possible |
| Cold working / soft | BKW | After the final heat treatment, a small amount of cold working is
performed, and limited cold deformation (eg bending, flaring) is
allowed for the end processing of the steel pipe. |
After Cold working Stress relief annealing | BKS | Annealing below Ac 1 after final cold working to relieve cold
working stress |
| Annealing | GBK | Full annealing of the steel tube in a protective atmosphere after
the final cold working |
| Normalizing | NBK | Normalizing of the steel pipe in a protective atmosphere after the
final cold working |
Production Process
Different processing methods and corresponding auxiliary procedures
are selected according to the processing performance of the metal,
the size of the pipe, the quality requirements, and the investment
and benefits. The basic processes of cold-rolled and cold-drawn
pipes are:
(1) pipe material supply, the pipe materials used are hot-rolled
finished pipes or semi-finished pipes, extruded pipes and welded
pipes;
(2) pipe material preparation, including inspection, bundling, acid
Washing, cleaning, rinsing, neutralizing, drying, lubricating,
etc.;
(3) Cold working (cold rolling or cold drawing);
(4) Finishing of finished products includes heat treatment of
finished products, straightening, sampling, cutting heads and
tails, inspection ( Manual inspection and various flaw detection),
hydraulic test, oiling, packaging, storage, etc. Different products
have different finishing contents.
Our Company
Shandong Huiyuan Metal Material Co., Ltd. is located in Liaocheng
Economic and Technological Development Zone, Shandong
Province,which is known as "Water City North of the Yangtze".
Hui Yuan is a trading company established based on Liaocheng
Development Zone Jinyun Steel Pipe Co., Ltd. The factory has more
than ten years of professional production experience .Now we have
cold rolled seamless steel pipe 12 production lines and hot rolled
seamless steel pipe 1 production line,one more hot rolled seamless
steel pipe production line is under construction.
Our main products are listed as follows: Hot Rolled steel pipe,
Precision Cold Rolled steel pipe, Cold Drawn steel pipe, alloysteel
pipe, bearing steel pipe, spiral pipe, galvanized pipe,Honed
tube,special shape steel pipe.etc.
Our products have been exported to Germany, South Korea, Russia,
Malaysia, Pakistan, Thailand, India, Ukraine and other countriesand
regions. We sincerely welcome friends from all over the world to
contact us and establish mutually beneficial business relations.
