Forward filter is good at producing spiral welded steel perforated pipe, we started this business ten years ago.

Spiral perforated pipe is welded by perforated steel roll which is revolving on the production line, different with straight perforated pipe. Welding ling is longer, so it can endure 30% more pressure.

Normally spiral welded steel is made of stainless steel like 201, 304, 316 which is used in petrol or textile, but it can also used in filtration, better than straight welded perforated pipe. In some situation it can also use galvanized steel or carbon steel. In this case we need minimum order quantity.

Different application need different steel like carbon steel, stainless steel, galvanized steel.

Perforation pattern usually is round holes, there is straight line holes and staggered line holes, different open area need different diameter center distance. 15%-33% open area is common configuration. Formulas for your reference

A: 60° perforation pattern or staggered pattern: hole diameter * hole diameter*90.69% / hole center distance * hole center distance

B: 180° perforation pattern or straight pattern: hole diameter * hole diameter * 78.5% / horizontal diameter center distance * vertical diameter center distance

C: Other special cases as follows

Spiral Welded Steel Perforated Pipe High Quality with Attractive Price is offered by Forward Filter, when become our important customer with good quantity business, special quotation is available.

Forward Filter is a factory with more than 10 years’ experience producing Stainless Steel Spiral Welded Perforated Tube in Petrolium Filtration with High Pressure. Our material is higher quality than normal level of other factories and we offered many big brand machinery companies in our domestic market and abroad market

Stainless Steel Spiral Welded Perforated Tube is applied in many industries area like petroleum refining filtration or oil producing filtration, hydraulic filtration, food filtration producing, drainage system, Light decoration, Vehicle Exhausts or Acoustical Dampening products.

Besides Stainless steel, we also can use other materials like galvanized steel , carbon steel and other alloy.

Perforation hole pattern is variety, which can be round, square and blinds

As for the seam style, we usually use spiral formed, if you have more than one hundred thousand meters require, we can accept custom-made.