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Stainless Steel Seamless Pipe

Seamless tubes are as defined – they do not have a welded seam. The tubing is manufactured through an extrusion process where the tube is drawn from a solid stainless steel billet and extruded into a hollow form.

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Stainless Steel Seamless Pipe Description

By definition, seamless tubes are completely homogenous tubes, the properties of which give seamless tubing more strength, superior corrosion resistance, and the ability to withstand higher pressure than welded tubes. This makes them more suitable in critical applications in harsh environments, but it comes with a price.

Product Parameters

Product Name Stainless Steel Seamless Pipe
Type Steel Pipe
Outer diameter Round Tube 4mm-200mm
Square Tube 10*10mm-100*100mm
Rectangular Tube 10*20mm-50*100mm
Wall Thickness 0.6mm-6.0mm
Length 1-6 meters, Length can be customized
Standard ASTM, AISI, JIS, GB, DIN, EN, etc.
Surface Black, Bright Polished, Rough Turning, Matt Surface Treatment, No. 4. BA, etc.
Scope of Application Common applications for stainless steel pipes include food processing,

Textile operations, Breweries, Water treatment plants, Oil and gas processing,

Fertilizers and pesticides, Chemical applications, Construction, Pharmaceuticals, Auto parts, etc.

Certificate ISO, SGS, BV, etc.
Production Technology Hot Rolling, Cold Rolling
Edge Processing Edging, Trimming

Stainless Steel Seamless Pipe Manufacturing

Knowing that distinction can also help in determining which tubing is best for a given application, welded or seamless. The method of manufacturing welded and seamless tubing is evident in their names alone. Seamless tubes are as defined – they do not have a welded seam. The tubing is manufactured through an extrusion process where the tube is drawn from a solid stainless steel billet and extruded into a hollow form. The billets are first heated and then formed into oblong circular molds that are hollowed in a piercing mill. While hot, the molds are drawn through a mandrel rod and elongated. The mandrel milling process increases the mold’s length by twenty times to form a seamless tube shape. Tubing is further shaped through pilfering, a cold rolling process, or cold drawing.

Stainless Steel Seamless Pipe Benefits

  • Stronger
    ● Superior corrosion resistance
    ● Higher pressure resistance

Stainless Steel Seamless Pipe Applications

  • Oil and gas control lines
    ● Chemical injection lines
    ● Below sea safety valves
    ● Chemical processing plant steam and heat trace bundles
    ● Fluid and gas transfer