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Low Temperature Seamless Steel Tube , 1 - 12m Length Carbon Seamless Steel Pipe

350mm Cold Drawn Carbon Seamless Steel Pipe For Chemical Composition

Cold drawn or cold-rolled precision seamless steel tubes

Relative standard :

GB/T222 permissible tolerance for chemical composition of steel products.

GB/T223.5 Steel and iron-Determination of acid-soluble silicon and total silicon content-Reduced molybdosilicate spectro photometric method(GB/T223.5-2008,ISO 4829-1:1986,ISO 4829-2:1988,MOD)

Mechanical properties

Steel grade 10# 20# 35# 45# Q345B

Steel grade	deliver conditions
	+C		+LC		+SR			+A		+N
	Rm/Mpa	A/%	Rm/Mpa	A/%	Rm/Mpa	ReH/Mpa	A/%	Rm/Mpa	A/%	Rm/Mpa	ReH/Mpa	A/%
	No less than
10	430	8	380	10	400	300	16	335	24	320-450	215	27
20	550	5	520	8	520	375	12	390	21	440-570	255	21
35	590	5	550	7				510	17	≥460	280	21
45	645	4	630	6				590	14	≥540	340	18
Q345B	640	4	580	7	580	450	10	450	22	490-630	355	22

Deliver condition:

Cold working/Hard condition:+C

No heat treatment after the final cold working process.

Cold working/Soft condition:+LC

After the final treatment there is a suitable cold working process

Stress relieving annealed conditio:+SR

After the final cold working process there is a stress relief heat treatment in a controlled atmosphere

Annealed condition:+A

After the final cold working process the tubes are fully annealed in a controlled atomosphere.

Normalised condition:+N

After the final cold working operation the tubes are normalized in a controlled atomosphere.

The permissible tolerances of the internal and external diameter unit:mm

Wall thickness(S)/extrernal diameter	Permissible tolerance
S/D≥1/20	According to the specified value of the table 1
1/40≤S/D<1/80	According to 1.5 times of specified value of the table 1
S/D<1/40	According to double of specified value of the table 1

Length is 2000-12000mm Fixed length and multiple length is available.

Tolerance for length , a)the length ≤5000mm +5,0mm

B)the length >5000mm +10,0mm

Every multiple length should leave incision margin according to the following requirement for the steel tubes delivered by multiple length.

External diameter≤159mm:5mm~10mm
External diameter>159mm:10mm~15mm

Curvature:≤3.0mm/m

The steel tubes’ total length curvature external diameter ≥16mm

ReH≤500Mpa,≤0.15%L
ReH>500Mpa,≤0.20%L

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?

A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, it is according to quantity.

Q: Do you provide samples of Seamless steel tube ? is it free or extra ?

A: Yes, we could offer the sample for free charge but need pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact us

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Categories	Seamless Steel Tube
Brand Name:	TORICH
Model Number:	Astm A179
Certification:	ISO9001 ISO 14001
Place of Origin:	China
MOQ:	5
Price:	negotiable
Payment Terms:	L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability:	50000Tons/Year
Delivery Time:	30days
Packaging Details:	In wooden boxes
Keyword:	Carbon Seamless Steel Pipe
OD:	3-4200mm
WT:	0.5-50mm
Length:	1-12m
Material:	20#.45# Q235 Q195 Q345
Shape:	Round