Gnee Steel (Tianjin) Co., Ltd. is one of the most reliable manufacturers and suppliers of q355b galvanized square pipe in China. Welcome to wholesale customized q355b galvanized square pipe at low price from our factory. If you have any enquiry about free sample and cheap products, please feel free to email us.
Q355B Galvanized Square Pipe GNEE
What material is q355b?
q355 is a low-alloy high-strength structural steel. This type of steel has good general performance and has the advantages of low temperature resistance, easy welding, cold stamping, and machinability. It is widely used in bridges, vehicles, ships, buildings, and pressure vessels. , towers, special equipment and other fields.
The neutral meaning of Q355, where "Q" means yield strength, 355 means that the yield strength of this steel is 355MPa, and its yield value will decrease as the thickness of the material increases. This type of steel is divided into five grades: A, B, C, D, and E, which represent different impact temperatures: Grade Q355a, no impact; Grade Q355b, impact at 20 degrees at room temperature; Grade Q355c, 0 degrees Impact; Q355d level, it is a -20 degree impact; Q355e level, it is a -40 degree impact. At different impact temperatures, the impact values are also different.
|
OD |
15-500MM |
|
Thickness |
0.5-20MM |
|
Material |
Q235, Q355, STK400, STK490, S235JRH, S275J2H, S355J2H, GR.A/B, X42-X70 |
|
Steel Grade |
Q195-Q345, 20#,16Mn,ect |
|
Standard |
ASTM, DIN, GB, JIS, ASTM A513-2007, DIN EN 10208-1-1998, DIN EN 10216-1-2004, GB/T 3094-2000, JIS G3465-2006, JIS G3466 |
|
Pipe end |
plain end, beveled, threaded with coupling, grooved; Surface: oiled, painting, anti-corrosion |
|
Lenght |
2-12M,Customer customization |
|
Packing |
In bundle or according to the customers'requirements |
|
Delivery time |
20-30 days after reveipt customers' deposit |
|
Productivity |
3000 Meteric Tons per Month |
|
Remark |
1.Payment terms :T/T,L/C
2.Terms of trade:CFR,CIF |
|
Application |
building construction, oil and gas transport, scaffoliding or prop, fire pipe |
|
Certificate |
ISO 9001, API 5L, CE |
| Square Hollow Section | Rectangular Hollow Section | Wall Thickness | |
| mm | mm | mm | |
| 20*20 25*25 30*30 | 20*40 30*40 | 1.7-2.75 | |
| 40*40 50*50 | 30*50 25*50 30*60 40*60 | 1.2-4.75 | |
| 60*60 | 50*70 40*80 40*50 | 1.2-5.75 | |
| 70*70 | 60*80 50*80 100*40 | 1.5-5.75 | |
| 80*80 75*75 90*90 | 60*100 50*100 120*60 100*80 | 1.5-8.0 | |
| 100*100 | 120*80 | 1.7-8.0 | |
| 120*120 | 160*80 150*100 140*80 | 2.5-10.0 | |
| 140*140 150*150 | 100*180 200*100 | 2.5-10.0 | |
| 160*160 180*180 | 200*150 | 3.5-12.0 | |
| 200*200 | 250*150 | 3.5-12.0 | |
| 250*250 280*280 | 250*200 300*200 | 4.5-15.75 | |
| 300*300 | 250*200 300*200 | 4.5-15.75 | |
| 350*350 | 350*300 450*250 400*300 500*200 | 4.5-15.75 | |
| 400*400 500*500 | 450*300 450*200 400*350 400*250 500*250 500*300 400*600 | 4.5-20.0 | |
Galvanized square tube and round tube:
Q355B Galvanized square tube application:
Galvanized square pipe test:
Q355B Galvanized square pipe packing:
What GNEE own?
200 employees.
5 ERW steel pipe production lines
6 hot dipped galvanized steel pipe production lines
11 square and rectangular steel pipe production lines
4 hot dip galvanized square and rectangular steel pipe production lines
1 national accredited laboratory with CNAS Certificates
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