Structural Steel Pipe

Product Introduction

Structural steel tubes are hot rolled seamless steel tubes and welded steel tubes. Seamless steel tubes for structure are divided into hot rolled and cold drawn types according to GB/T8162-2008. The outer diameter of hot-rolled steel pipe is 32-630mm, and the wall thickness is 2.5-75mm. The outer diameter of cold-drawn steel tube is 5-200mm, and the wall thickness is 2.5-12mm. Welded steel pipe is made of steel plate or strip after crimping forming. Straight welded steel tubes shall have an outside diameter of 5-508mm and a wall thickness of 0.5-12.7mm, and shall comply with the provisions of GB/T3793-2008. The welded steel pipe used for low-pressure fluid transportation is also called general welded pipe, commonly known as black pipe. The specifications are expressed in millimeters of nominal caliber, which shall comply with the provisions of GB/T3091-2008.

Main grades of the Structural Steel Pipe

Standard	Grade
ASTM A53	GR.A	GR.B
ASTM A106	GR.A	GR.B	GR.C
GB/T 8162	10#	20#	35#	45#	Q345A
	20Cr	40Cr	20Mn2	45Mn2	40CrB
	42CrMo	Q345D	Q345E	20CrMo	35CrMo
	Q345B	27SiMn	A345C	15CrMo
ASTM A519	1020	1035	1045	4130	4140
DIN1629	St37.0	St44.0	St55	St52.0
DIN17175	St35.8	17Mn4	13CrMo44
EN10297	E355	C45	34CrMo4
JIS G3441	SCM 420TK	SCM440TK
JIS G3445	STKM13A	STKM19A

Seamless steel tubes are mainly used for general structure and mechanical processing.

Related Steel Products+ See More

DIN17175 St35.8 seamless steel pipe

GB/T 8162 Q345D small seamless steel pipe

GB/T 8162 Q345B Structural Steel Pipe

EN10297 E355 steel

EN10297 C45 structural steel pipe

ASTM A106 GRB steel

ASTM A53 GRB steel pipe

ASTM A519 Grade 4140 Steel Pipe

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About BBN Steel

Henan BEBON Iron & Steel Co., Ltd was founded in 2000, which initially focus on providing high-quality steel products to serve for China's rapid infrastructure development. Based on the advantages of steel resources in domestic market and good reputation, combining with the huge international market demand for steel products, BEBON started the international business in 2010 and successfully being approved and certified by ISO9001:2008, the Registration number is 626014Q11531R0S. With the quality steel products and professional service, BEBON was award the international acclaim from infrastructure, shipbuilding, petroleum industry etc., and gradually grow into a bright star in the steel export industry .

With the exploration and innovation of Bebon people, BEBON gradually formed four major advantageous products: steel plate, steel pipe, stainless steel, special steel, and established our own Machining processing center in order to meet customer's diverse requirements.

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20 +Years

Production experience
3500 +

Sucessfull Projects
6000 +

Satisfied Clients

Quantity(Metric Tons)	1 - 10	10 - 50	>50
Est. Time(days)	5	10	Negotiable