Hot Rolled Seamless Steel Tube Gas Transportation

Product Description

TORICH GOST 8731 10# 20# 16Mn Hot Rolled Seamless Steel Tubes for Gas Transportation

Standard	GOST 8731
Material	10#, 20#, 45#, 16Mn, 12CrMo, 15CrMo, 12Cr1MoV etc
Size	OD: 10.3-1300mm WT: 1-200mm Length: 1-12m
Technique	Hot Rolled
Application	For Gas, Air, Water and Oil Transportation, as well as general purpose

 

Mechanical Requirements

Grade of Steel	Breaking-down point, MPa (kgf/mm²)	Yeild point, MPa (kgf/mm²)	Relative elongation, %	Brinell hardness (pipe wall thickness over 10 mm)
	No less than:			Diameter of dent, no less than, mm	Hardness H, no more than
10	353 (36)	216 (22)	24	5.1	137
20	412 (42)	245 (25)	21	4.8	156
35	510 (52)	294 (30)	17	4.4	187
45	588 (60)	323 (33)	14	4.2	207
20X	431 (44)	-	16	-	-
40	657 (67)	-	9	3.7	269
30XCA	686 (70)	-	11	-	-
15XM	431 (44)	225 (23)	21	-	-

Production Show

1. Incoming Raw Material Inspection
2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects.

FAQ

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 carbon 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

TORICH GOST 8731 10# 20# 16Mn Hot Rolled Seamless Steel Tubes for Gas Transportation