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Tianjin Zhaolida Steel Pipe Co.,Ltd

Tianjin Helon International Trading Co.,Ltd

Mobile TEL: +86 15900249379(WhatsApp)

E-mail: lucy@tjqsd.com

Skype: tjzhaolida QQ: 386692006
Address: No.9 of Technology Street, DaQiuZhuang Industrial District,Jinghai County, Tianjin, China 

Web: www.tjzhaolida.com

Manufacture Hot Sale Square Steel Hollow Section Pipe/tube

Manufacture Hot sale square steel hollow section pipe/tube What is welded square steel pipe? Welding pipes is one of the simplest and most durable ways to join piping together and steel pipes can simply be welded together with MIG (metal inert gas), TIG (tungsten inert gas or SMAW (stick metal...

Manufacture Hot sale square steel hollow section pipe/tube


What is welded square steel pipe?

Welding pipes is one of the simplest and most durable ways to join piping together and steel pipes can simply be welded together with MIG (metal inert gas), TIG (tungsten inert gas or SMAW (stick metal arc) welding. Before welding two pipes together, avoid any gaps between the two pipes. While welding, take measures to ensure the continual alignment of the two pipes.

Standard sizes for square steel pipe:

OD mm

WT mm

OD mm

WT mm

OD mm

WT mm

OD mm

WT mm

OD mm

WT mm

20x20

1.0-3.0

130x30

2.5-12

20x30

1.0-3.0

50x80

1.5-6.0

100x150

2.5-12

25x25

1.0-3.0

140x140

2.5-12

20x40

1.0-3.0

50x90

1.5-6.0

100x200

2.5-12

30x30

1.0-3.0

150x150

2.5-12

25x40

1.0-3.0

50x100

1.5-6.0

100x250

2.5-12

40x40

1.0-5.0

160x160

2.5-12

30x40

1.0-3.0

50x120

1.5-6.0

100x300

2.5-12

50x50

1.0-5.0

180x180

2.5-12

30x50

1.0-3.0

60x80

1.5-6.0

100x400

2.5-12

60x60

1.0-5.0

200x200

3.0-12

30x60

1.0-3.0

60x90

1.5-6.0

150x200

2.5-12

70x70

1.0-5.0

220x220

3.5-12

40x50

1.0-3.0

60x100

1.5-6.0

150x250

3.0-12

80x80

1.0-5.0

250x250

4.0-12

40x60

1.0-3.0

60x120

1.5-6.0

150x300

3.0-12

90x90

1.0-6.0

300x300

1.5-12

40x80

1.0-3.0

75x125

1.5-6.0

200x300

4.5-12

100x100

1.0-6.0

400x400

6.0-12

40x100

1.0-6.0

80x100

1.5-6.0

200x400

4.5-12

120x120

1.0-6.0

500x500

6.0-12

50x70

1.0-6.0

80x120

1.5-6.0

300x400

4.5-12

Material list

Elements

Chemical Composition%

Mechanical Property

Material

C%

Mn%

S%

P%

Si%

Yield Point

Tensile Strength

Elongation







(Mpa)

(Mpa)

(%)

Q195

0.06-0.12

0.25-0.50

<0.05

<0.045

<0.3

>195

315-430

32-33

Q235

0.12-0.2

0.30-0.70

<0.045

<0.045

<0.3

>235

375-500

24-26

Q345

<0.20

1.0-1.6

<0.04

<0.04

<0.55

>345

470-630

21-22

Our Services

• Your inquiry related to our product & price will be replied within 24hours.
• Well-trained & experienced staff are to answer all your inquiries professionalin English of course.
• OEM is highly welcomed. We have strong R&D team here to help.
• Your business relationship with us will be confidential to any third party.
• Good after-sale service offered, please get back if you got question


Contact information: 

Wency Lee

Email: helon_wency@tjzhaolida.com

WhatsApp/Wechat: + 86 18610131845

Skype: wency0505


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