Advantages of spiral welded pipe:(1) Steel pipes of different diameters can be produced using strip
steel of the same width, and
steel pipes of large diameter can be produced from narrow strip
steel.
(2) Under the same pressure conditions, the stress of the
spiral welded seam is smaller than that of the straight seam, which
is 75% to 90% of that of the straight seam welded pipe, so it can
withstand greater pressure. Compared with the straight seam welded
pipe of the same outer diameter, the wall thickness can be reduced
by 10% to 25% under the same pressure.
(3) The size is accurate, the general diameter tolerance does not
exceed 0.12%, the deflection is less than 1/2000, and the ovality
is less than 1%. Generally, the sizing and straightening process
can be omitted.
(4) Continuous production is possible. In theory, long steel pipes
can be produced, with small head and tail loss, and can
increase the metal utilization rate by 6% to 8%.
(5) The equipment is light in weight and low initial investment. It
can be made into a trailer-type mobile unit to directly produce
welded pipes at the construction site where the pipeline is laid.
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| API 5L, API 5CT, SY/T5037, SY/T5040, GB/T9711.1,GB/T9711.2, A, B,
X42-X80, L175-L555,L245NB, etc. |
| 1.0033,08F,A53,A106,Q235,Q345b, |
| |
| |
| 5.8m-11.8m,or as customer's requirements. |
| |
| Middle East,Africa,South-east Asia,USA,Canada,South America |
| |
| 1. Piling project 2. Heat-supply project 3. Conveying drinking water,drainage,coal gas,fuel gas,mine slurry
and other low & middle pressure fluids 4. API5L Petroleum and natural gas pipeline 5. Chemistry industry 6.Electric power engineering circulating pipe |
| 1.Bundle packing or in bulk 2. Bevelled or plain ends as per buyer's request 3. Marks: as per customer's request 4. Surface treatment: with or without varnish/2PP/2PE/3PE/3PP/FBE
coating 5. Metal or plastic protecting caps at pipe ends |
| about 20days after receipt of irrevocable L/C at sight or 30%
deposit T/T |
| 1.Spiral welded steel pipe 2.LSAW steel pipe 3.ERW steel pipe 4. Casing pipe |
| FBE, 2PE, 3PE,3PP etc. |
| Plain end, beveled end, PVC covered and both ends capped ,threaded
and coupled |
