ASTM A213 SS 321H seamless pipes are widely used in oil refining equipment, industrial boilers, pressure vessels, chemical and pharmaceutical equipment, petrochemical refineries and chemical process heat exchangers.
GNEE is a professional exporter of A213 stainless steel pipes, exporting 20,000 tons of steel pipes per year.
The production process of ASTM A213 321H stainless steel pipes supplied by GNEE includes cold rolling and cold drawing, and the delivery status is: heat treatment + pickling, and it has different sizes, grades and thicknesses, which can be customized according to customers' customized requirements.
Before leaving the factory, 321H seamless stainless steel pipes are hydraulically pressure tested one by one, and the pressure is maintained for no less than 5 seconds at the specified pressure value. The steel pipes must not leak or seep, and the quality of the steel pipes is strictly guaranteed.
ASTM A213 SS 321H Seamless Tube Chemical Composition
| C | P | S | N | ||||||||
| 321H | 0.04 0.10 |
2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 |
– | 9.0 12.0 |
– | Ti=4(C+N) 0.70 |
|
ASTM A213 TP321H Stainless Steel Seamless Tube Physical Properties
(kg/m3) |
Mean Co-eff of Thermal Expansion (µm/m/ degree ) | (W/m.K) |
Specific Heat 0-100 degree |
(nΩ.m) |
|||||
| 0-100 degree | 0-315 degree | 0-538 degree | At 100 degree | At 500 degree | |||||
| 321H | 8027 | 193 | 16.6 | 17.2 | 18.6 | 16.1 | 22.2 | 500 | 720 |
ASTM A213 Stainless Steel 321H Cold Drawn Tube
GNEE's products are of good quality, low price and fast delivery, which ensures the stability of product quality. There are more than 200 employees, including 80 technicians. We have established an effective and complete quality control and assurance system. The company has also obtained ISO9001 quality system certification.
In addition, the company's additional businesses include: zero cutting, chamfering, square cutting, special-shaped cutting, castings, and forgings. The product thickness can reach 150mm, and various special materials and specifications can be customized for customers.
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