Electric Resistance welded steel tube used in oil drilling and machinery manufacturing, etc.
Standard: GB/T3091 – 2001, BS1387 – 1985, DIN EN10025, DIN2440, EN10219, JIS G3444: 2004, ASTM A53, ASTM A500, API 5L.
Mild black erw pe coated steel
|schedule 40 carbon steel pipe price per ton weld mild black erw pe coated steel pipe manufacturer|
± BS1387-1985 Black Steel Pipe 0.02
2--12M, according to customers' requirements
Bared, Oiled, Galvanized, Painted
ASTM A 53 /ASTM A106 / BS 1387-1985
Product Category :
Metallurgy, Mineral & Energy
In bundles or according to customers' requirements
1.For low pressure liquid delivery such as water , gas and oil
Middle east, Africa, North and South America, East and West Europe, South and southeast Asia,Australia
Place of Origin
Processing technology available:
Threading, coupling and with plastic caps protected
1) Payment term : T/T
We,Tianjin Qunshengda Steel Pipe Co.,Ltd is a professional and reputed manufacture, for carbon steel welded pipes and galvanized steel pipes
1, solid bentSolid bending, as the name implies, is the compaction of bending, when the inner and outer rollers and the tube blank are compacted in both directions.
1) the advantages of solid bending are small rebound, accurate molding, and as long as the roll is accurate, the Angle molding R is more accurate.
2) the disadvantage of solid bending is the stretching/thinning effect.First, the real bending will produce a stretch at the bending point, and the stretching effect will shorten the longitudinal length of the bending line.Second, the metal at the real bend will be thinned by stretching.
2, The hollow steel tube
Empty bending is the bending moment formed by the unidirectional contact between the outer roller and the outer wall of the tube blank, which will cause the bending line to produce compression. The compression effect will make the bending line elongate lengthwise, and the metal at the bending point will accumulate and become thicker, which is the compression/thickening effect of empty bending.
1) the advantage of empty bending is that side length bending can be carried out when the actual bending cannot be carried out, such as the top/side side synchronous bending and finishing of square rectangular tube.Empty bend can also bend R<0.2t internal Angle without pipe wall fracture.
2) the disadvantage of air bending is that when the upper/side side is in sync with the air bending, because the upper and lower rollers produce pressure at the same time, the forming force is easy to exceed the critical point, resulting in side instability and concave, and will also affect the stable operation and forming quality of the unit.This is also the square rectangular tube and the circular tube air bending molding different characteristics.
Certifications of product
Why to choose us?
1.We provide products to our customers individual specifications and special needs with competitive price and best service.
2. Immediate respond
We will be 24/7 on line at your services. Provide one-to-one service with our sincerity.
3. Professional suggestions
We could provide you the professional suggestion with our expertise acumen.
4. Short delivery period
We are based on a long-term cooperation with several major domestic steel company with an outstanding advantage is sufficient supply. Shorter the supplying period.