Characteristics and classification of stainless steel thick-walled tubes

Stainless steel thick-walled pipe is the most common form of thick-walled pipe. It has a wide range of applications in the industry. Because stainless steel thick wall has good pressure and corrosion resistance, it has become the most fashionable and most detectable material.

First, stainless steel thick-walled pipe features:

1. Stainless steel thick-walled pipe corrosion resistance: corrosion resistance is better than 304 stainless steel, and it has good corrosion resistance in the production process of pulp and paper. Moreover, 316L stainless steel is also resistant to erosion by marine and aggressive industrial atmospheres.

2, stainless steel thick-walled tube heat resistance: intermittent use below 1600 degrees and good oxidation resistance in continuous use below 1700 degrees

Second, stainless steel thick-walled tube classification

1. Stainless steel thick-walled pipe for mechanical construction and decoration

This stainless steel thick wall adopts imported first grade SUS304, 304L, 316, 316L 201, 202

a, round tube: 1-406.4mm thickness: 0.3-12.0 mm

b, square tube: 10*10-150*150mm thickness 0.4-6.0mm

c, rectangular tube: 10*20-100*200mm thickness: 0.4-6.0mm

d, flower tube: 15.9-76.2mm thickness: 1.0-1.5mm

2. Stainless steel thick-walled pipe for industrial piping

Executive Standard: ASTM A312 ASTM A778 GB/T12771

Material: Imported first grade 304 304L 316 316L

Specification: φ13.72~φ1000mm

This stainless steel thick-walled product is used for: piping for chemical, petrochemical, water treatment, paper making, food hygiene, etc.

3. Stainless steel thick-walled tubes for boiler heat exchangers and condensers

Executive standard: ASTM A249 JIS G3463 or DIN 17457

Material: Imported first grade 304 304L 316 316L

Specification: φ13.72~φ1000mm

The products are used to build high-pressure and ultra-high-pressure power station boilers, and to build superheated steam pipes, boiling water pipes and superheated steam pipes for locomotive boilers.

4, stainless steel tube for food hygiene

Executive Standard: ASTM A249 ASTM A270 JISG3347

Material: Imported first grade 304 304L 316 316L

Specifications: φ15.9~165.2

This stainless steel thick-walled product is used for piping of chemical, petrochemical, water treatment, papermaking, food hygiene and other equipment.

Film Velcro Disc

Film disc is one kind of velcro discs, using open sand planting method, planting the specially treated high-performance abrasive on the highly polyester film and carrying out special anti-blocking coating treatment, which can provide uniform grinding effect.


Film disc's advantage is the hidden super coated aluminum oxide corundum. The difference between it and other conventional coatings is that conventional discs have two layers of sanding surface. The outer layer on the sand paper falls down together with the sanding product's dust during sanding, which causing premature clogging.


However, film sanding disc has a hidden anti-clogging coating. This coating makes it last longer than all other traditional sand paper including the best 3M discs. Furthermore, the proprietary film backing causes a very strong bond between the abrasive and the film backing adding to its long life. Finally, the film backing and abrasive is very even, much more than conventional paper, making it much more effective during the entire sanding process.


Film discs are widely used in the grinding of automobile primer, atomic gray, intermediate paint and finish paint. And features: high grinding efficiency, good anti blocking performance, good grinding consisitency without secondary scratch, surface grinding GJ, durable.




Film Velcro Disc,Velcro Grinding Discs,Square Velcro Sanding Pads,Velcro Backed Sanding Discs

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