Seamless Cylinder Steel Tube 37mn 4140 34CrMo4 for Gas Cylinder

Basic Info

Model NO.	37mn 4140 34CrMo4
Sample	Free Sample Available
Delivery Time	Shipped in 15-20 Days After Payment
End	Bevel End(>2"), Plain (≤2"), with Plastic Cap
Length	5.8/11.8/6m
Transport Package	Bundles or in Bulk. Bundle with Steel Strips
Specification	OD: 10mm-910mm; THK: 1.0-56mm;
Trademark	boer king
Origin	China
HS Code	730419
Production Capacity	2000 Tons/Month

Product Description

Product information:

Seamless Steel Tube, Hydraulic Cylinder Tube for Gas Cylinder, 37mn 30CrMo, GB 18248,

PART I: PRODUCT INTRODUCTION
What is a high pressure cylinder tube?

High pressure gas cylinder tube is a kind of seamless steel tube, commonly known as seamless steel tube for gas cylinders, widely used in all kinds of high pressure vessel tanks, as well as industrial gas cylinders, fire cylinders, vehicle CNG cylinders, vehicle composite winding cylinders and other gas cylinders manufacturing.

What are the manufacturing processes of high-pressure gas cylinder tubes?

High pressure gas cylinder tube can be divided into hot rolled and cold drawn. Hot rolled gas cylinder tube is mainly used to manufacture all kinds of pressure vessels, cylinders and other products. Cold drawn gas cylinder seamless steel tube is mainly used to manufacture vehicle-mounted gas cylinders requiring light weight and thin wall thickness and steel liner circular winding vehicle-used CNG cylinders.

What are the production inspection and testing standards for high-pressure gas cylinder tubes?

The domestic standards are GB/T 18248 and GB/T 28884, and the corresponding foreign standards are JIS G 3429, ISO 11120, ASTM 372, etc

What are the main materials of high pressure cylinder tube at home and abroad?

The main materials of gas cylinder tube in China are 37Mn, 34CrMo4, 35CrMo, 30CrMnSiA, 30CrMo, 34Mn2V,

The main foreign standard material of gas cylinder tube is: 38Mn6, 30CrMo4, Group , 4130X, Grade C, Grade E, STH11, STH12, STH21, STH22

 

Characteristics and advantages of high-pressure gas cylinder tubes manufactured by our company: Raw materials provided by HengGang high-quality special steel and its high purity of steel, cold drawn cylinder tube, the tube body geometry size and the inner and outer surface quality, its wall thickness uniformity and high precision, light quality, productivity and yield is quite high, also facilitate cylinder manufactory convergent, and I produce cylinder pipe diameter can be done in 325 ~ 430, the minimum wall thickness of 3.5 mm, As a conventional specification of gas cylinders, the delivery time is faster.

1. Description: Honing is a kind of machining technology. Through honing head, the inner hole of cold drawn pipe is processed by reciprocating high-speed grinding technology, so that the inner hole can meet the requirements of tolerance size and surface roughness that we need.
Honed tube is a kind of smooth bore steel tube used to manufacture hydraulic cylinder barrels that is the core part of a piece of hydraulic cylinder.
2. Commodity: St52.4 Honed Hydraulic Cylinder Precision Pipe
3. Size range: Inside diameter: 25mm -500mm; Wall thickness: 2-50mm
4. Available steel grade:

SAE/AISI:	38Mn6,30CrMo4,Group ,4130X,Grade C,Grade E,STH11,STH12,STH21,STH22
DIN:	ST52, ST52.3, ST52.4
EN:	E355, C45E, 25CrMo4, 42CrMo4, CK45, S45C, E410, E470
GB:	37Mn,34CrMo4,35CrMo,30CrMnSiA,30CrMo,34Mn2V,

5. Manufacture method: Cold rolled, hydraulic cold drawn, hot rolled+deep hole boring
6. Delivery condition:

BK	BKW	BKS	GBK	NBK	Q+T
+C	+LC	+SR	+A	+N
Cold rolled	Cold drawn	Stress relieved	Annealed	Normalized	Quenched+Tempered

7. Bore treatment: Honing, skiving&roller burnishing
8. Bore roughness control: Ra0.25um max or Ra0, 35um max for honed tubes, Ra0.25um max for skived&roller burnished tubes.
9. End finish: Plain ends with square cuts, free of burrs for honed tubes. Little bevelled ends for skived&roller burnished tubes.
10. Standard export packing: In bundles tied with steel strips. Internal & external oil coating. Plastic caps on both ends. External packing by PVC bags and knit bags.
11. Customized packing and marking can be provided upon request.
12. H8 tolerance:

ID range	Tolerance	ID range	Tolerance
18< d ≤30	+0/+0.033	180< d ≤250	+0/+0.072
30< d ≤50	+0/+0.039	250< d ≤300	+0/+0.081
50< d ≤80	+0/+0.046	300< d ≤315	+0/+0.081
80< d ≤120	+0/+0.054	315< d ≤400	+0/+0.089
120< d ≤180	+0/+0.063	400< d ≤500	+0/+0.097

13. Difference between honed tube and skived & roller burnished tube: In hydraulic cylinder industry, there are 2 solutions for bore treatment: Honing, and skiving&roller burnishing. Honing or skiving&roller burnishing leads to different internal surface image, but both ensure good roughness.

Product Show:

We have established quality management system according to ISO9001:2008 and carry out the total quality management.

Competitive Price

We can offer you reasonble price as your requirement.



we have large stocks,and can do OEM very fast as your requirements.



Timely reply! Perfect packing! Friendly atitude! Do our best to meet your demand!

Various Products

Carbon seamless steel pipe,Oil Casing ,Drill Steel Pipe,Galvanized Steel Pipe,Carbon weled steel pipe,Stainless Steel productions,...... Also we can do OEM.