K M D Steel And Tube is topmost manufacturers, supplier, stockists and exporter of SS 321/321H Pipes & Tubes which are durable and made of high quality. These Pipes & Tubes are also known for it’s high tensile strength, dimensional steadiness, high resilience and more. The SS 321/321H Pipes & Tubes have it’s application in industries like power generation, gas processing, off-shore oil drilling companies, petrochemical, pharmaceuticals equipment, chemical equipment, sea water equipment, heat exchangers, condensers, pulp and paper industry and more. These Pipes & Tubes are made of best quality raw material and do match international quality standard and this helps us to have high demand in the market from our consumers. The Pipes & Tubes are made in different size, thickness and dimension and are delivered to consumers as per their need and demands. When it comes to packaging it has a lot of significance because we know the ups and downs that are faced while import and export of an product hence we make sure that the products are delivered to consumers in best conditions without any damages to it.
| Standard | 321 - ASTM /ASME A/SA 213 / 249 / 269 / 312 / 358 CL. I to V 321H - ASTM /ASME A/SA 213 / 249/ 269 / 312 / 358 CL. I to V |
|---|---|
| SEAMLESS 321/321H Pipes & Tubes | 1/2" NB - 16" NB |
| ERW 321/321HPipes & Tubes | 1/2" NB - 24" NB |
| EFW 321/321H Pipes & Tubes | 6" NB - 100" NB |
| Certifications | IBR AND NON IBR |
| Schedule | SCH 10 – SCH XXS |
| Type | Seamless / ERW / EFW/ Fabricated / LSAW Pipes |
| Form | Round, Square, Rectangular, Hydraulic Etc |
| Length | Single Random, Double Random & Cut Length. |
| End | Plain End, Beveled End, Threaded |
| Application | Aerospace – piston engine manifolds, Chemical Processing, Expansion Joints, Food Processing – equipment and storage, Petroleum Refining – polythionic acid service, Waste Treatment – thermal oxidizers |
| % | Cr | Ni | C | Si | Mn | P | S | N | Ti | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| 321 | min:17.0 max:19.0 |
min: 9.0 max:12.0 |
max:0.08 | max:0.75 | max:2.0 | max:0.045 | max:0.03 | max:0.10 | min:5*(C+N) max:0.70 |
Balance |
| 321H | min:17.0 max:19.0 |
min: 9.0 max:12.0 |
min:0.04 max:0.10 |
min:18.0 max:20.0 |
max:2.0 | max:0.045 | max:0.03 | max:0.10 | min:5*(C+N) max:0.70 |
Balance |
| Grade | Tensile Strength ksi (min.) |
Yield Strength 0.2% Offset ksi (min.) |
Elongation - % in 50 mm (min.) |
Hardness (Brinell) MAX |
|---|---|---|---|---|
| 321/321H | 75 | 30 | 40 | 217 |
| Denstiy lbm/in3 |
Coefficient of Thermal Expansion (min/in)-°F |
Thermal Conductivity BTU/hr-ft-°F | Specific Heat BTU/lbm -°F | Modules of Elasticity (annealed)2-psi | |
|---|---|---|---|---|---|
| at 68 °F | at 68 – 212°F | at 68 – 1832°F | at 200°F | at 32 – 212°F | in tension (E) |
| 0.286 | 9.2 | 20.5 | 9.3 | 0.12 | 28 x 106 |