10# 20# 35# 45# 40Cr 25Mn 37Mn5 Cold Rolled Precision Seamless
Steel Pipe For Cylinder
Outer Diameter: 10-219mm
Wall Thickness: 2-10mm
Main Material: 10# 20# 35# 45# 40Cr 25Mn 37Mn5
| Material | 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 |
| 25Mn | 0.22-0.29 | 0.17-0.37 | 0.70-1.00 | ≤0.035 | ≤0.035 | ≤0.25 |
| 37Mn5 | 0.30-0.39 | 0.15-0.30 | 1.20-1.50 | ≤0.015 | ≤0.020 | |
Cold Rolled Precision Steel Pipe is a kind of high-precision steel
pipe material processed by cold drawing or hot rolling. Because
there is no oxide layer on the inner and outer walls of the
precision steel pipe, no leakage under high pressure, high
precision, high finish, no deformation after cold bending, no
flaring, no cracks in flattening, etc.
Application
Cold Rolled Precision Steel Pipe are widely used in Automobiles,
Motorcycles, Electric Vehicles, Petrochemicals, electric power,
ships, Aerospace, Bearings, Pneumatic Components, Medium and Low
Pressure Boiler pipe, Steel Sleeves, Bearings, Hydraulics,
Machining and other fields.
Product Feature
1. The outer diameter is smaller.
2. High precision and small batch production.
3. The cold drawn finished product has high precision and good
surface quality.
4. The cross-sectional area of the steel pipe is more complicated.
5. The performance of the steel pipe is better and the metal is
denser.
Process
Tube blank - inspection - peeling - inspection - heating -
perforation - pickling and passivation - grinding - lubrication and
air drying - cold rolling - degreasing - cutting head - inspection
- marking - Product packaging.
Delivery Conditions
BKS(+SR): After the final cold drawing process there is a stress
relieve heat treatment in a controlled atmosphere.
NBK(+N): After the final cold drawing operation the tubes are
normalized in a controlled atmosphere.
GBK(+A): After the final cold drawing process the tubes are
annealed in a controlled atmosphere.
BK(+C): No heat treatment after the final cold drawig process.
BKW(+LC): After the final heat treatment there is a suitable
drawing pass.
Packing & Delivery
1. Packing: Seamless Steel Pipe will packing in bundles/in bulk/in
plastic packing.
2. Trade terms:FOB/CFR/CIF
3. Shipping port: Xingang Tianjin
4. Shipment:
1) Small diameter: Weight >Measurement
a. Length: ≤5.8m, loaded in 20FT Container, Max 27-28tons
b. Length: ≤11.8m, loaded in 40 FT Container, Max 27-28tons
c. Length: ≥12m, shipped by bulk vessel. FILO terms
2) Big dimater: Weight a. Size of 20 FT Container(inside
:5898*2352*2350mm)(12024*2352*2395mm)
5.Delivery time: Normal size: 7days send from warehouse directly.
Special size: 25-30days custom made for you.
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.
Main standards: DIN2391, DIN2445, EN10305, DIN1629, DIN1630, ASTM
A179.
