China Special Design for Steel Pipe - Seamless steel tubes for coal mining- GB/T 17396-2009 – Sanonpipe Manufacturer and Supplier

Special Design for Steel Pipe - Seamless steel tubes for coal mining- GB/T 17396-2009 – Sanonpipe

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Special Design for Steel Pipe - Seamless steel tubes for coal mining- GB/T 17396-2009 – Sanonpipe Detail:

Overview

Application

Seamless steel pipe for coal mine is mainly used to manufacture seamless pipe for hydraulic prop in coal mine.

Main Grade

Grade of high-quality carbon structural steel: 20#、35#

Chemical Component

Grade

Chemical Component/%

0. 17 一0. 23

0.17 一0. 37

0. 35一0.65

一

<0. 25

<0. 20

一

<0. 035

0. 32一0. 39

0.17—0. 37

0. 50一0.8

—

一

<0. 25

<0.25

<0. 20

一

<0. 035

0. 42一0. 50

0.17 一0. 37

0.50 一0.8

—

<0. 25

WO. 25

WO. 20

一

<0.035

27SiMn

0. 24一0. 32

1.10 一1.4

一

—

W0. 30

<0.30

<0. 20

<0.15

<0.035

<0. 035

30MnNbREa

0.27 一0. 36

0. 20一0. 60

1.20 一1. 60

0.020一0. 050

0. 02一0. 04

<0. 30

<0. 20

<0.15

<0. 035

a The content of re is calculated as 0.02% ~ 0.04% added to the molten steel.

Mechanical Property

Mechanical Property
Grade	Tensile strength Rm/MPa	Yield MPa			Elong after fracture A/%	Reduction of area Z/%	Shork absorption energy （KV2）/J
		Steel tube wall thickness/mm
		<16	>16 〜30	>30
	no more less
20	410	245	235	225	20	—
35	510	305	295	285	17	—	—
45	590	335	325	315	14	—	—
27SiMn	980	835			12	40	39
27SiMn	980	835			12	40	39
30MnNbRE	850	720			13	45	48
30MnNbRE	850	720			13	45	48

Test Requirement

In addition to ensuring the chemical composition and mechanical properties, the steel pipe directly rolled with ingot shall be subject to low power inspection.

Supply Ability

Supply Ability: 2000 Tons Per Month Per Grade of Seamless steel tubes for coal mining.

Packaging

In Bundles And In Strong Wooden Box

Delivery

7-14 days if in stock, 30-45 days to produce

Payment

30% depsoit, 70% L/C or B/L copy or 100% L/C at sight

Product Detail

mechanical/Chemical&Fertilizer Pipes

GB/T8162-2008

ASTM_A519-2006

BS EN 10210-1-2006

ASTM A53A53M-2012

GB9948-2006

GB6479-2013

GB/T 17396-2009

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