TP321 (1.4541) capillary seamless tube for European markets

During early this year, we delivered a batch of TP321 capillary seamless tubes to the European market. Our customers are very happy with our quality, and they have placed repeated order with us recently.

Goods description

TP321 precision capillary seamless tube
Standard: ASTM A269
Condition: bright annealed
Size 1: OD2.5±0.05 x WT0.25±0.03 x Length 4000 +50mm
Size 2: OD3.0±0.05 x ID2.5±0.05 x Length 4000 +50mm

Characteristics of our products ( refer to pictures above )

1, Tight size tolerance
For size 1, actual OD2.493 – 2.505mm, WT 0.255m, length 4005mm
For size 2, actual OD2.988 – 2.996mm, ID 2.480mm, length 4005mm

2, Excellent surface quality
Bright, smooth, no defects, clean, free of oil and grease.
Surface roughness about Ra.0.30um
Ultra-sonic cleaned
Purge the inner hole with high pressure and high purity gas.

3, Good straightness
The straightness is controlled within 1mm per 1000mm length.

4, Good tube end
Square cut, no burrs, no deformation.

5, Good packing
The inner package is tightly wrapped with transparent plastic film, waterproof and moisture-proof.
The outer packing by PVC pipe.

Our service

◎ Tube precision cutting, length tolerance could be ±0.01mm
◎ Tube surface treatment like super mirror ID surface polishing, minimum ID 0.10mm, best ID surface roughness: Ra0.0015μm.
◎ Tube deep processing includes tube coiling, tube bending, tube end forming, tube body processing, laser processing, various tube needles making.

TP321 overview

TP321 stainless steel is Ni-Cr-Ti austenitic stainless steel, with abrasion resistance, high temperature resistance, creep resistance, etc., used in the manufacture of wear-resistant acid containers and wear-resistant equipment lining, conveying pipelines.

The Ti in TP321 stainless steel exists as a stabilizing element, but it is also a heat-strong steel, which is much better than 316L in high temperature. TP321 has good abrasion resistance in organic and inorganic acids at different concentrations and temperatures, especially in oxidizing media, and is used to manufacture wear-resistant acid containers and the lining of wear-resistant equipment.

TP321 performance is very similar to 304, but due to the addition of titanium, it has better resistance to grain boundary corrosion and high temperature strength. Due to the addition of titanium, it effectively controls the formation of chromium carbide.

TP321 stainless steel has excellent high temperature Stress Rupture properties and high temperature Creep Resistance, and its stress mechanical properties are better than 304 stainless steel.