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Hollow Black Iron Q235 Welded Square Steel Pipe

Welded Square tube is also be used widely same as round tube, usually square tube for structure be used in industry and decorate field. This kind of tube finish can be varied much, such NO.4, HL, Grit600, Colored, Mirror.

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Hollow Black Iron Q235 Welded Square Steel Pipe

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We will wholeheartedly provide you with high cost-effective Stainless Steel Sheet, stainless steel tube profiles, Duplex stainless steel wire and meticulous after-sales service. Our company keeps the principle of 'people-oriented, excellence', in the spirit of 'concentration, focus, and professionalism'. We always adhere to the service concept of maximizing the interests of customers, serve attentively, and customer first! As the core position in the industry, our company must be in line with international standards and operate in good faith in order to be invincible in the competition.

Product Description

Production Standard:

ASTM A554, JIS G3446, DIN17457, GB/T 12770, JG/T3030, YB\T 5363

Main grade mechanical property in different standard

201	Y.S./Mpa ≥	T.S./Mpa ≥	E.L./% ≥	HB ≤	HRB ≤	HBW ≤	HV ≤
ASTM	260	515	40	-	95	217	-
JIS	275	520	40	241	100	-	253
GB	205	515	30	-	99	-	-
202	Y.S./Mpa ≥	T.S./Mpa ≥	E.L./% ≥	HB ≤	HRB ≤	HBW ≤	HV ≤
ASTM	260	620	40	-	-	241	-
JIS	275	520	40	-	95	207	218
GB	-	-	-	-	-	-	-
304	Y.S./Mpa ≥	T.S./Mpa ≥	E.L./% ≥	HB ≤	HRB ≤	HBW ≤	HV ≤
ASTM	205	515	40	-	92	201	-
JIS	205	520	40	187	90	-	200
GB	205	515	40	-	92	201	210
316L	Y.S./Mpa ≥	T.S./Mpa ≥	E.L./% ≥	HB ≤	HRB ≤	HBW ≤	HV ≤
ASTM	170	485	40	-	95	217	-
JIS	175	480	40	187	90		200
GB	170	485	40	-	95	217	220
409	Y.S./Mpa ≥	T.S./Mpa ≥	E.L./% ≥	HB ≤	HRB ≤	HBW ≤	HV ≤
ASTM	-	-	-	-	-	-	-
JIS	175	360	22	162	80	-	175
GB	-	-	-	-	-	-	-
409L	Y.S./Mpa ≥	T.S./Mpa ≥	E.L./% ≥	HB ≤	HRB ≤	HBW ≤	HV ≤
ASTM	170	380	20	-	88	179	-
JIS	175	360	25	162	80	-	175
GB	170	380	20	-	88	179	200
410S	Y.S./Mpa ≥	T.S./Mpa ≥	E.L./% ≥	HB ≤	HRB ≤	HBW ≤	HV ≤
ASTM	205	415	22	-	89	183	-
JIS	205	410	20	-	88	183	200
GB	205	415	20	-	89	183	200

Production Process and Feature

About square and rectangle tube producing, the first step we make round tube, then reform to square or rectangle tube, sometime do the surface process.

Application

It's widely used on industry structure and building decorative

We have a comprehensive quality management system and are fully capable of customizing and developing a variety of new Hollow Black Iron Q235 Welded Square Steel Pipe according to our customers' needs. The core of our company's development is to keep up with the pace of the times, grasp the pulse of the market, create first-class quality and do eternal business. We firmly believe that implementing a rational style of doing things is the foundation of a company's healthy growth.

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