pre-galvanized square steel pipe/welded galvanized square steel tube

 square tube pipe and rectangular tube pipe production process

1. Uncoiling

2. Flatterning

3. Shearing and butt welding

4. Circle shearing

5. Loop storing

6. Roll forming

7. High frequency welding

8. Removal of burrs

9. Water cooling

10. Forming

11. Non-destructive inspection

12. Cutting off H

13. Inspection

14. Marking

15. Packing and warehousing

after the square tube and rectangular tube are produced out

the diameter and wall thickness will be tested, all finish, making bundles.

stock in warehouse

making cutting or making thread or other type fabrication in warehouse

Packing Information

Company Information

provides steel plate, steel sheet, steel pipe,square tube and rectangular tube, seamless steel pipe and tube, round bars and steel section, and doing steel products processing service: steel plate and sheet processing service. The processing works concludes cutting the larger plate into the small sizes customer demand, cut by drawing, cut to special sizes, weld the cut parts by drawing, also make galvanizing processing or surface painting on the final processed parts; steel pipe hollow bar cutting and lathe processing to make the outer diameter and wall thickness to meet customers requirement, also make heat treatment for hollow bars and pipes. Has large stocks for the carbon steel and low alloy steel plates and sheets, especially have the thick plate and heavy plates on stock, also can provide the special material and large size steel plates, boiler and pressure vessel steel plate, marine steel plate, hot rolled steel plate for new production.

Related products can be supplied

welded steel pipe

seamless steel pipe

steel coil

steel sheet

steel profile

fabrication service

FAQ

1.How long can make delivery?
For stock products, will make shipments in 5- 7 days after receiving deposit or receiving L/C; for products need new production for common materials, usually make shipments in 15-20 days; for products need new production for special and rare materials, usually need 30-40 days to make shipment.
2. Will the Test Certificate be certified to EN10204 3.1?
For the new production products no need furthur cutting or processing, will provide the Original Mill Test Certificate certified to EN10204 3.1; for the stock products and the products need cutting or furthur processing, will issue Certificate of Quality on our Company, It will show the original mill name and the original datas.
3. Once the received products found not comply with the products the contract demands, what will you do?
Once the received products found not comply with the products the contract lists, when receiving the pictures and the official documents and data from your side, if it is proved not comply, we will compensate the loss at first time.

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