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Hongming Metal is a reputed industrial product supplier. We manufacture a wide range of flawless Pipes and Tubes like SS 321, SS 317L, SS 304, SS 316L, SS 304, etc. We manufacture a wide range of industrial products and distribute them at a reasonable price. We have readily maintained product stocks to filling client demands on time. We have a conventional door to door service for shipping products to our customers.

Stainless Steel 321 Pipes and Tubes has a good creep strength, good insulation, and good resistant properties. In reduce ductility in cold applications and serve an increase in hardness and durability. They are leaked proof, serve long life service and tensile strength. Also available in custom size and specifications as per client’s demands. It possesses aqueous corrosion-resistant, inter-granular corrosion, and minimum carbon content.

We supply Stainless Steel 321 Pipes and Tubes for a wide range of applications in the petrochemical industry, chemical industry, pulp, and paper industry, food processing industries, marine industries, oil and gas industries, and many more.

Hongming Metal manufactures perfect SS 321 pipes and tubes from our latest installed technology. We make proper use of our equipment. We have a well qualified professional team in our production plant. From our reliable vendors, we procure premium quality raw materials for manufacturing Stainless Steel 321 Pipes and Tubes. We strictly follow standard procedures and make proper use of modern technology to produce perfect thickness, length, dimensions, and features. We conduct a standard test of our pipes and tubes. In this phase, the product strictly undergoes various tests. The entire production procedure is done under the observation of our experienced teams.

Hongming Metal assigns shipping consignment to professionals who have the knowledge and can adequately handle products. We deliver Stainless Steel 321 Pipes and Tubes safely. Our sales team has experience and expertise in all customs procedures and documents. Hongming Metal adopted packaging in an eco-friendly manner. SS 321 pipes and tubes are covered with layers and packed in a wooden case or box. The case is covered with proper strips and has lifting points to lift and prevent damages.

SS 321 Pipes and Tubes Specification

Specifications : ASTM A213, A312, A269, A358 / ASME SA213, SA312, SA269, SA358

Outside Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size Steel Tubes available Ex-stock

Thickness Range : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Type : Seamless / ERW / Welded / Fabricated / CDW

Form : Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes

Length : Single Random, Double Random & Required Length

End : Plain End, Beveled End, Treaded

Outside Finish : 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements

Delivery Condition : Annealed and Pickled, Polished, Bright Annealed, Cold Drawn

Available Types of Stainless Steel 321 Pipes & Tubing

Seamless Pipes

Stainless Steel 321 Seamless Pipe
SS 321 Seamless Pipe
ASTM A312 TP321 Seamless Pipe
UNS S32100 Seamless Pipes
SS 1.4541 Seamless Pipe
ASME SA 312 TP 321 Seamless Pipes

Seamless Tubes

Stainless Steel 321 Seamless Tubes
SS 321 Seamless Tubing
ASTM A213 TP321 Seamless Tube
UNS S32100 Seamless Tubes
SS 1.4541 Seamless Tubing
ASME SA 213 TP 321 Seamless Tubes

Welded Pipes

Stainless Steel 321 Welded Pipe
SS 321 Welded Pipe
ASTM A312 TP321 Welded Pipe
UNS S32100 Welded Pipes
SS 1.4541 Welded Pipe
ASME SA 312 TP 321 Welded Pipes

Welded Square Tubes

Stainless Steel 321 Welded Tube
SS 321 Welded Tubing
ASTM A269 TP321 Welded Tube
UNS S32100 Welded Tubes
SS 1.4541 Welded Tubing
ASME SA 269 TP 321 Welded Tubes

EFW Pipes

Stainless Steel 321 EFW Pipe
SS 321 EFW Pipe
ASTM A358 TP321 EFW Pipe
UNS S32100 EFW Pipes
SS 1.4541 EFW Pipe
ASME SA 358 TP 321 EFW Pipes

ERW Pipes & Tubes

Stainless Steel 321 ERW Pipe
SS 321 ERW Pipe
ASTM A312 TP321 ERW Pipe
UNS S32100 ERW Tubes
SS 1.4541 ERW Tubing
ASME SA 269 TP 321 ERW Tubes

SS 321 Pipes & Tubes Equivalent Grades

SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10

SS 321 Pipes & Tubes Chemical Composition

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 0.10 max 9.00 – 12.00 5(C+N) – 0.70 max

SS 321 Pipes & Tubing Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
7.93 g/cm3 1457 °C (2550 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %


Q1. Where is your factory ?

A1: Our company’s processing center is located in Jiangsu, Wuxi, China.
Which is well equipped with kinds of machines, such as laser cutting machine,mirror polishing machine and so on.
We can provide a wide range of personalized services according to the customers’ needs.

Q2. What are your company’s main products ?
A2: Our main products are stainless steel plate/sheet, coil, round/square pipe, bar, channel, etc.

Q3. How do you control quality ?
A3: Mill Test Certification is supplied with shipment, Third Party Inspection is available.

Q4. What are the advantages of your company ?
A4: We have many professionals, technical personnel, more competitive prices and best after-dales service than other stainless steel companies.

Q5. How many coutries you already exported ?
A5: Exported to more than 50 countries mainly from America, Russia, UK, Kuwait, Egypt,Turkey, Jordan, India, etc.

Q6. Can you provide sample ?
A6: Small samples in store and can provide the samples for free.
Customized samples will take about 5-7days.