Gautam Tubes is an ISO registered company engaged in manufacturing and supplying of Stainless Steel 321H Pipes & Tubes. These pipes and tubes are engineered to offer a great combination of prominent features such as resistance, impact strength, and high temperature strength. We have an extensive inventory of SS pipes and tubes in various designations, standards, and non standards dimensions. We use only advanced machines and equipment to fabricate top-class pipes and tubes.
Stainless Steel 321H Pipes & Tubes are made of higher carbon version of 321 grades. These pipes and tubes are developed for enhanced creep resistance and for higher strength at a temperature above 1000 deg F. in most cases; carbon content enables the dual certifications. However, SS 321H pipes and tubes are not hardened by heat treatment operations, only just by cold working operations. Effectively, these can be manufactured or welded by standard shop fabrication operations.
These pipes and tubes show excellent corrosion resistance similar to the 300 series. They were intended to use in chromium carbide precipitation range between 1800 deg F to 1500 deg F where usually unalloyed pipes and tubes are subject to intergranular attacks. Stainless steel pipes and tubes can be used in a most dilute organic compound containing environments at moderate temperatures. Also, 321h prevent polythionic acids from stress corrosion cracking. Moreover, SS 321H pipes and tubes can also perform well in environments containing chlorides or fluorides free solutions at nominal temperatures. However, these got affected while servicing higher concentrations of chemicals.
321H SS Capillary Tube, SS 321H Heat Exchanger Tube, SUS 321H Tubes, Distributors of Stainless Steel 321H Instrumentation Tubing, Stainless Steel 321H ERW Pipe Price List, AISI 321H Pipes, SS 321H Seamless Tubing Exporter in Mumbai.
Machining results of 321H grade is good, only it requires slow speed and heavy feeds. Welding of pipes and tubes are easier as 321H has good welding attributes. The standard process such as resistance and arc welding is best suited for welding. In addition to titanium, it prevents carbide precipitation. Hot working operations are readily done temperatures up to 2100 deg F to 2300 deg F. Pipes and tubes must be water quenched or annealed completely after working to attain maximum corrosion resistance. 321H is slightly tough and ductile, thus cold working requires higher initial forces. It is annealed in temperatures between 1800 deg F to 2000 deg F.
Standard Specification and Size Range of Stainless Steel 321H Pipe and Tube
Specifications for Stainless Steel 321H Pipe ASTM A312, A358 / ASME SA312, SA358
Specifications for Stainless Steel 321H Tube : ASTM A213, A269, A249, A511, A554 / ASME SA213, SA269, SA249, SA511, SA554
Dimension Standard : ANSI B36.19M, ANSI B36.10
Outside Diameter of SS 321H Pipe : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock
Outside Diameter of SS 321H Tube : 1/8" OD TO 2"OD 3MM OD TO 38 MM OD
Thickness Range : 0.3mm – 50 mm, 1MM TO 3 MM 0.028 TO 0.156 IN, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS
Seamless Stainless Steel 321H Pipe Size : 1 / 2" NB - 16" NB
Welded Stainless Steel 321H Pipe Size : 1 / 2" NB - 16" NB
EFW Stainless Steel 321H Pipe Size : 6" NB - 24" NB
Type : Seamless / ERW / Welded / Fabricated
Length : Single Random, Double Random & Required Length
Form : Round, Square, Rectangular, Oval, Hydraulic Etc
End : Plain End, Beveled End, Treaded
End Protection : Plastic Caps
Finish : 2B, No.4, No.1, No.8 Mirror Finish, or as per customer Requirements
Delivery Condition : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
EN 10216-5 : EN 10216 Seamless Steel 321H Tubes, EN 10216-5 1.4878 Seamless Stainless Steel Tube for pressure purposes
EN 10217-7 : EN 10217 Welded Stainless Steel 321H Tubes, Steel EN 10217-7 1.4878 Welded Tube for pressure purposes
Stainless Steel 321H Seamless Pipes
SS 321H Seamless Pipe, UNS S32109 Seamless Pipes, DIN 1.4878 Seamless Pipe, ASTM A312 TP321H Seamless Pipes
Stainless Steel 321H Seamless Tubes
SS 321H Seamless Tube, UNS S32109 Seamless Tubes, SS 1.4878 Seamless Tubes, ASTM A213 TP321H Seamless Tubing
Stainless Steel 321H Welded Pipes
SS 321H Welded Pipes, SS S32109 Welded Pipe, SS1.4878 Welded Pipes, ASTM A312 TP321H Stainless Steel Welded Pipes
Stainless Steel 321H Welded Tubes
SS 321H Welded Tube, Stainless Steel S32109 Welded Tubes, DIN 1.4878 Welded Tubing, ASME SA 249 TP321H Stainless Steel Welded Tubes
Stainless Steel 321H ERW Pipes
Stainless Steel S32109 ERW Pipes, SS 1.4878 ERW Pipes, ASME SA312 TP321H Stainless Steel ERW Pipes, SS 321H ERW Pipes
Stainless Steel 321H ERW Tubes
SS S32109 ERW Tubes, Stainless Steel 1.4878 ERW Tubes, ASME SA312 TP321H Stainless Steel ERW Tubes, SS 321H ERW Tubing
Stainless Steel 321H EFW Pipes
UNS S32109 EFW Pipes, Stainless Steel 1.4878 EFW Pipes, ASME SA358 TP321H Stainless Steel EFW Pipes, SS 321H EFW Pipes
Chemical Composition of Stainless Steel Grade 321H Pipes & Tubes
Grade | C | Mn | Si | P | S | Cr | N | Ni | Ti |
SS 321H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 - 19.00 | 0.10 max | 9.00 – 12.00 | 4(C+N) – 0.70 max |
Mechanical Properties of ASME SA312 Stainless Steel 321H Pipes / SA213 Stainless Steel 321H Tubing
Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
8.0 g/cm3 | 1457 °C (2650 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
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