Product Details

Our company

Established in December 1992, with registered capital of 5 million yuan and plant and office space of 12,000 square meters, covering an area of 20,000 square meters , our company mainly produces various specifications of cold drawn,rolled precision steel tube,hydraulic cylinder tube and SRB Tube, which are widely used in such industries as hydro-cylinder, automobile, engineering machinery, textile machinery, printing machinery, oil drilling, etc. Our company is also the distributor of several domestic well-known steel tube plants in Shandong, and mainly distributes seamless steel tubes of all kinds of materials.

DESCRIPITION OF PRODUCTS

Product Item	Good quality seamless steel tube
Outer Diameter	30mm~250mm
Wall Thickness	2mm~30mm
ID tolerance	H7 H8 H9
Material Grade	10#-45#, 16Mn,25Mn,27SiMn,E355, SAE1026
Standard	GB/T8713,GB/T3639,ASTMA519, DIN 2391
Application	Hydraulic Pipe, Hydraulic cylinder, automobile, oil drilling, textile machinery and other field
Package	According to the customer’s requirement
Delivery Time	20-30days or according to the customer’s requirement
Finally supply condition	BK BKS BKW NBK GBK

Mechanical Property

Delivery Condition	Cold drawn+stress-relieved(BK+S)(SR)			Cold finished(hard)(BK)
Steel Grade	Tensile strength (Rm Mpa)	Yield strength (ReH Mpa)	Elongation A5%	Tensile strength (Rm Mpa)	Elogation A5%
20#	≥520	≥375	≥15	≥550	≥8
45#	≥600	≥520	≥10	≥640	≥5
16Mn(Q345B Q345D)	≥600	≥520	≥14	≥640	≥5
25Mn	≥600	≥510	≥15	≥640	≥5
27SiMn	≥760	≥610	≥10	≥800	≥5
St45	≥520	≥375	≥15	≥550	≥5
E355(St52)	≥600	≥520	≥14	≥640	≥5
SAE1026	≥600	≥510	≥15	≥640	≥5

The finished products :

Package:

1. bundle packing

2. marking as per customer's requests

3. paint on the pipe as per customer request

4. pipe caps as customer request

Delivery conditions:

1. NBK(+N)

after cold forming, eventually above phase transition point, in a protective atmosphere of annealing oxidation medium

2. GBK(+A)

after cold forming, annealing in non oxidizing medium protective gas

3. BK(+C)

the final heat treatment after cold forming, therefore small steel pipe plastically, the plastically degree does not guarantee

4. BKW(+LC)

after final heat treatment, a tiny cold drawing deformation, continue again when machining steel pipe allowed inside certain limits cold deformation(bending, flaring)

5. BKS(+SR)

have a stress relief after cold forming, heat treatment, steel pipe can be carried out within a certain limit in the appropriate processing

Our serverce:

1. Surface protection

2. Flexible terms of payment
3. Big discount for repeat customers
4. Smooth delivering procedure

5.More than 20 years experience

6.Alibaba trade assurance supplier for 3 years

Our process:

our plant:

FAQ:

Q: what about your standard delivery date?

A: 30 days after receiving deposit