spiral duct pipe fittings 7. Straight seam electric welded steel tube (yb242-63) is a steel tube with longitudinal parallel welding seam and steel tube. It is usually means into metric welded steel pipe,Welded thin wall pipe, the transformer cooling pipe and so on.
spiral duct pipe fittings
3m-12m or as per customers request
ISO9001-2008, GB/T 9711-1997, SY/T 5037-2000, API 5L
ISO9001, API 5L
1.Big OD: in bulk vessel
2.Small OD: packed by steel strips
3.woven cloth with 7 slats
4.according to the requirements of customers
Mechanical & manufacture, Steel structure,
Shipbuilding, Bridging ,Automobile chassis
1.Payment terms : T/T, L/C
2. Terms of trade : FOB, CFR(CNF), CIF ,DDP,EXW
3 .Minimum order : 5 tons
4 .Lead time: general 15~20days.
Spiral Duct Pipe Fittings
What are the defects in the welding area of spiral steel tube?Do you know?The following by the spiral steel pipe manufacturers of technical personnel for you to explain, I hope to help you.1, bubbleThe high bubble occurs in the middle of the weld pass, and hydrogen is still hidden outside the weld metal in the form of bubbles. The main reason is that there is moisture outside the wire and flux, which is indirectly applied without drying treatment. In addition, the welding process has a small electric current, and the welding speed is too fast.2. Thermal crackThe reason for the occurrence of thermal crack is when the weld stress is very high, maybe when the SI element in the weld metal is very high, and there is another kind of sulfur crack, the blank is the plate with strong sulfur segregation (belonging to soft rimten steel), in the welding process, the sulfide enters the weld metal and the crack occurs.
The Process Flow
Cangzhou Steel Pipe Group (CSPG)Co.,Ltd.
has more than eighteen years history company which located in Lecong Iron and Steel World, a well-known steel distribution center in China, with superior geographical position and convenient water and land transportation.
We are a direct-selling manufacturer specializing in the research and development of spiral steel pipes, steel coiled pipes, anti-corrosion steel pipes inside and outside. Since its inception, the company has been guided by a brand-new thinking of steel pipe product market based on the business philosophy of honesty, pragmatism and knowledge-seeking.
Edit by Ms. Vicky of CSPG
Contact us directly by:
Email: firstname.lastname@example.org ,email@example.com
Tel / Whatsapp: +86-180327140146