Product Details

commodity name: DIN 2391 cold drawing st52.4 seamless precision steel tube

Outer diameter	30-250mm
THICKNESS	2-30MM
LEMGTH	customized
MATERIAL	10#-45 st35-st52 q345
STANDARD	ASTM GB DIN
PAYMENT	T/T. L/C
TRADE TERMS	FOB
PLACE OF ORIGIN	Yantai City, China
DELIVERY TIME	10-30days or according to customer's aquirement
INSPECTION	Eddy current and ultrasonic test
PACKAGE	We usually bundle with steel strips, branding parcel and wooden box outside .or according to the customer’s requirements
APPLICATION	Hydraulic cylinder, automobile, oil drilling ,printing machinery etc.
NOTICE	1,special design available according to your requirements,
INFROMATION OF COMPANY
COMPANY TYPE	Professional pipe manufacture and trader
MAIN MARKET	Middle East ,Africa, Southeast Asia, European and South America

Chemical Component:

Steel Grade	Chemical Composition (%)
	C	Si	Mn	P	S	Cr
	C	Si	Mn	≤
St45	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250
ST52(E355)	≤0.22	≤0.55	≤1.6	0.025	0.025	0.25
SAE1026	0.22-0.28	0.15-0.35	0.60-0.90	0.040	0.050	/
27SiMn	0.24-0.32	1.10-1.40	1.10-1.40	0.035	0.035	0.300
20#	0.17-0.24	0.17-0.37	0.35-0.65	0.035	0.035	0.250

Mechanical Properties

Delivery condition	BKS Cold Drawn & Stress-Relieved
Steel Grade	Rm MPa	ReH MPa	Elongation A5(%)
ST45	≥520	≥375	≥15
ST52(E355)	≥600	≥520	≥14
SAE1026	≥600	≥510	≥15
16Mn	≥600	≥520	≥14
20#	≥520	≥375	≥15

tolerance of dimension

ID size

ID deviation (mm)

H10

+0.021

+0.033

+0.052

+0.084

>30~50

+0.025

+0.039

+0.062

+0.100

>50~80

+0.030

+0.046

+0.074

+0.120

>80~120

+0.035

+0.054

+0.087

+0.140

>120~180

+0.040

+0.063

+0.100

+0.160

>180~250

+0.046

+0.072

+0.115

+0.185

>250~315

+0.052

+0.081

+0.130

+0.210

>315~400

+0.0527

+0.089

+0.140

+0.230

the finished prioducts

company information

we are the manufacturer of precision seamless steel tube ,and our company mainly produces various specifications of seamless steel tube ,such as cold drawn /rolled seamless steel tube ,hydraulic cylinder steel tube ,SRB/honed steel tube ,seamless steel tube and DOM tube ,and so on .our products used in hydraulic cylinder ,automobile ,oil drilling ,engineering machinery ,textil machinery ,printing machinery etc.our company established in 1992 ,so we have more than 20years experience in the precision seamless steel tube world ,in a word ,welcome to our company to negotiate business and visiting .

about our packaging and shipping

Please don’t worry that our products are packed, stored, transported according to the international

regulation. We do care about the quality of our products; even some little details are paid attention to.

We wrap the precision steel pipe with anti-rust paper and steel rings to prevent damage. Identification

labels are tagged according to standard specification or customer's instructions. Special packing is

available as per customer's requirement. Plus, our storage racks are made of wood. Any unwanted

chemical reaction can be prevented.

about our services

1. Cargo track service during transporting and feedback service after cargo is loaded on board

2. Flexible terms of payment by

3. Big discount for repeat customers

4. Smooth delivering procedure

5. Payment Terms: T/T , L/C And so on.

our certificate

our processing

FAQ

Why you choose us?

•Our company established in December 1992, so we have 23years experience in tube manufacture

•We have the best service, quality, competitive price, and high reputation in the tube world

•We can supply all kinds of steel pipes such as:

1.hot rolled/cold drawn seamless steel tubes

2.precision steel tubes

3.honed and skived tubes

ld drawn welded tubes (DOM tubes)