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20MnG Seamless Steel Tubes

Name: 20MnG Seamless Steel Tubes Manufacturers and Suppliers China - Professional Factory - Wanlei Steel Pipe
Brand: Wanlei Steel Pipe
SKU: 99284505

20MnG Seamless Steel Tubes is suitable for high pressure and steam boiler for piping.

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Description

Tianjin Wanlei Steel Pipe Co., Ltd. is one of the leading manufacturers and suppliers of 20mng seamless steel tubes in China, featured by quality products and low price. If you're going to wholesale durable 20mng seamless steel tubes made in China, welcome to get pricelist and free sample from our factory.

20MnG seamless steel tubes

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Details of 20MnG seamless steel tubes

Class:20MnG

Heat treatment: Normalizing

Normalizing temperature:880℃-940℃

Chemical requirement: (%)

Class	C	Si	Mn	P(max)	S(max)
20MnG	0.17-0.23	0.17-0.37	0.70-1.00	0.025	0.015

Mechanical property of 20MnG seamless steel tubes

Class

Tensile strength

(Mpa)

Yield strength

(Mpa)

Elongation (%)

Longitudinal

transverse

20MnG

415-560

240

Test of 20MnG seamless steel tubes

1) The steel tube shall be hydraulically tested one by one, and the maximum test pressure shall be 20Mpa. Under test pressure, the hold time shouldn't be less than 10 seconds.

2) The supplier can use eddy current test or magnetic leakage test instead of hydraulic test.

3) For steel tubes with outer diameter between 22mm-400mm and thickness less than 40mm, a flattening test shall be conducted.

4) Pipes with an outer diameter greater than 400 mm and a thickness greater than 40 mm shall be subjected to a bending test.

Product show of 20MnG seamless steel tubes

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