In fittings, we produce high quality SS 304 socket weld fittings, SS 304 threaded fittings and SS 304 buttweld pipe fittings. We are able to create value to our clients with quality products and competitive prices for stainless steel 304 pipes and fittings. We specialize in producing large diameter 100% X-ray welded stainless steel 304/304L pipes and stainless steel 304/304L buttweld fittings.
| Product | Stainless Steel 304 Pipes & Fittings |
| Equivalents | WNR. 1.4301, UNS S30400, AISI 304, AISI 304L, 1.4306, UNS S30403 |
| Type | Seamless, Welded, Forged |
| Size | 1/2″ to 48″, Thickness: SCH 5S, 10S, 40S (STD), 80S (XS), 160, XXS |
| Specification | ASTM, ASME, DIN |
| Finish | Annealed & Pickled, 2B, No.4, Mirror, Polish |
| Packing | Bundled Packing |
| Services | Cutting, Beveling, Threading, Polishing |
Strict quality control system and perfect after-sales service system are always our top concern which can guarantee and track the quality of our stainless steel 304 pipes from raw materials procurement, production processes, finish products as well as after-sales service.
| Product | Stainless Steel 304 Pipes (Seamless, Welded, ERW) |
| Equivalents | WNR. 1.4301, UNS S30400, AISI 304, AISI 304L, 1.4306, UNS S30403 |
| Specification | ASTM A 312/ASME SA 312, ASTM A 358/ASME SA 358, ASTM A554, ASTM A249, AST A213 |
| Size | 1/2″ to 48″, Thickness: SCH 5S, 10S, 40S (STD), 80S (XS), 160, XXS |
| Length (mm) | 6000, 3000, 2000, 12000, Custom Length |
| Finish | Annealed & Pickled, 2B, No.4, Mirror, Polish |
| Packing | Bundled Packing |
| Services | Cutting, Beveling, Threading, Polishing |
| Stainless Steel | Tradename | UNS no. | Werkstoff No. | Density (g/cm³) |
| 304 | 304 Stainless | S30400 | 1.4301 | 8.0 |
| 304L | 304L Stainless | S30403 | 1.4307 | 8.0 |
| 304H | 304H Stainless | S30409 | 1.4948 | 8.0 |
| 304LN | 304LN Stainless | S30453 | 1.4311 | 8.0 |
| Specification | ASTM A182 / A240 & ASME SA182 / SA240 |
| Grade | 304, 304L, 304H, 304LN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | 1/8″ to 36″ |
| Dimensions | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64, etc. |
| Products | Size |
|---|---|
| SS 304 90° Elbows | Sizes: 1/8″ – 4″ Pressure Ratings: 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| SS 304 Couplings | |
| SS 304 45° Elbows | Sizes: 1/8″ – 4″ |
| SS 304 Reducers | Sizes: 1/8″ – 4″ |
| SS 304 Street Elbows | Sizes: 1/8″ – 4″ |
| SS 304 Inserts | Sizes: 1/8″ – 4″ |
| SS 304 Tees | Sizes: 1/8″ – 4″ |
| SS 304 Caps | Sizes: 1/8″ – 4″ |
| SS 304 Crosses | Sizes: 1/8″ – 4″ |
| SS 304 Unions | Sizes: 1/8″ – 4″ |
| Stainless Steel | Tradename | UNS No. | Werkstoff No. | Density (g/cm3) |
|---|---|---|---|---|
| 316 | 316 Stainless | S31600 | 1.4401 | 8.00 |
| 316L | 316L Stainless | S31603 | 1.4404 | 8.00 |
| 316H | 316H Stainless | S31609 | 1.4919 | 8.00 |
| 316Ti | 316Ti Stainless | S31635 | 1.4571 | 8.00 |
Stainless steel 316 and 316L pipe fittings are manufactured in compliance with ASTM A-403 and ANSI B16.9 / 16.28 / MSS SP-43 / Welding Bevel Standards ANSI B 16.25.
We specialise in the manufacture and supply of SS 316 pipe bends in both standard and non-standard sizes, with bending radius of 1D to 10D or any other custom bending radius. We offer ex-stock delivery of various standard size and type SS 316 pipe fittings, SS 316 flanges and SS 316 pipe bends.
Our specialty is to manufacture and supply large size fabricated 100% radiography tested SS 316 elbows, SS 316 reducers, SS 316 tees and SS 316 large diameter fabricated pipes.
Stainless steel 316 and 316L are the second most commonly used stainless steel grades after 304/304L, being a higher version of 304, with addition of molybdenum and slightly higher content of nickel. The properties of stainless steel 316 are similar to that of Type 304, except that alloy 316 is stronger at elevated temperatures.
316L is the low carbon version, while Type 316H is a higher carbon version of 316 stainless steels. Meanwhile, 316Ti is a titanium stabilized version of 316. Resistance to sensitization is achieved in type 316Ti with titanium additions to stabilize the structure against chromium carbide precipitation, which is the source of sensitization.
| Specification | ASTM A182 / A403 & ASME SA182 / SA403 |
| Type | Seamless / Welded / Fabricated |
| Variants | 316, 316L, 316H, 316LN |
| Bending Radius | R = 1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
| Range | ½”NB to 48”NB in Sch 10s, 40s, 80s, 160s, XXS |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43 |
| Products | Size |
|---|---|
| SS 316 90° Elbows | Sizes 1/8″ – 4″ |
| SS 316 Couplings |
Pressure Ratings –
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS
| SS 316 45° Elbows | SS 316 Reducers |
| SS 316 Street Elbows | SS 316 Inserts |
| SS 316 Tees | SS 316 Caps |
| SS 316 Crosses | SS 316 Unions |
| Specification | ASTM A182 / A240 & ASME SA182 / SA240 |
| Grade | 316, 316L, 316H, 316LN |
| Standard | ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size | 1/8” to 36″ |
| Dimensions | ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure | 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
SS 347 and SS 347H belong to the austenitic stainless steel family, designed for high-temperature applications where oxidation and corrosion resistance is critical. Niobium stabilization prevents sensitization during welding and high-temperature exposure.
Description: A stabilized version of SS 304 alloyed with niobium to resist intergranular corrosion and sensitization.
Description: High-carbon variant of SS 347 with improved high-temperature strength and creep resistance.
| Property | SS 347 | SS 347H |
|---|---|---|
| Carbon Content | 0.08% max | 0.04–0.10% |
| Strength | Good | Higher, enhanced strength at high temperatures |
| Temperature Resistance | 800°F (427°C) to 1650°F (899°C) | Up to 1650°F (899°C) and higher |
| Corrosion Resistance | Excellent | Excellent |
| Weldability | Good, with limited post-weld heat treatment needed | Good, post-weld heat treatment may be necessary |
| Applications | General high-temperature environments | High-stress applications, power generation, chemical processing |
SS 321 is a stabilized austenitic stainless steel alloyed with titanium to prevent carbide precipitation and intergranular corrosion during high-temperature service. It provides excellent oxidation and corrosion resistance at elevated temperatures.
| Element | Typical Composition |
|---|---|
| Chromium (Cr) | 17.0–19.0% |
| Nickel (Ni) | 9.0–12.0% |
| Titanium (Ti) | 5×(C + N) min |
| Carbon (C) | 0.08% max |
| Manganese (Mn) | 2.0% max |
| Silicon (Si) | 0.75% max |
| Phosphorus (P) | 0.045% max |
| Sulfur (S) | 0.03% max |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 75,000–95,000 psi (515–655 MPa) |
| Yield Strength | 30,000–45,000 psi (205–310 MPa) |
| Elongation | 40% in 8 inches (200 mm) |
| Hardness | 170–200 Brinell |
| Modulus of Elasticity | 28,000 ksi (193 GPa) |
SS 321H is a high-carbon variant of SS 321. The key difference is the higher carbon content, which increases its strength at high temperatures. This makes SS 321H ideal for high-stress, high-temperature applications where better creep resistance is required.
| Element | Typical Composition |
|---|---|
| Chromium (Cr) | 17.0–19.0% |
| Nickel (Ni) | 9.0–12.0% |
| Titanium (Ti) | 5×(C + N) min |
| Carbon (C) | 0.04–0.10% |
| Manganese (Mn) | 2.0% max |
| Silicon (Si) | 0.75% max |
| Phosphorus (P) | 0.045% max |
| Sulfur (S) | 0.03% max |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 90,000–105,000 psi (620–725 MPa) |
| Yield Strength | 40,000–55,000 psi (275–380 MPa) |
| Elongation | 30% in 8 inches (200 mm) |
| Hardness | 200–220 Brinell |
| Modulus of Elasticity | 28,000 ksi (193 GPa) |
| Property | SS 321 | SS 321H |
|---|---|---|
| Carbon Content | 0.08% max | 0.04–0.10% |
| Tensile Strength | 75,000–95,000 psi (515–655 MPa) | 90,000–105,000 psi (620–725 MPa) |
| Yield Strength | 30,000–45,000 psi (205–310 MPa) | 40,000–55,000 psi (275–380 MPa) |
| Elongation | 40% in 8 inches (200 mm) | 30% in 8 inches (200 mm) |
| Hardness | 170–200 Brinell | 200–220 Brinell |
| Temperature Resistance | 900°F (482°C) continuous, 1600°F (871°C) intermittent | 1050°F (566°C) continuous, 1600°F (871°C) intermittent |
| Creep Strength | Moderate | High due to increased carbon content |
| Weldability | Good, no post-weld heat treatment required | Good, post-weld heat treatment may be required |
| Applications | General high-temperature environments | High-stress, high-temperature applications |
SS 310 (also known as AISI 310) is an austenitic stainless steel designed for high-temperature applications requiring superior oxidation resistance. It is widely used in industries where high heat and extreme conditions are present. SS 310 is a high-performance stainless steel alloy suitable for furnace manufacturing, chemical processing, aerospace, and other industries demanding extreme heat resistance and corrosion protection. SS 310S, a lower-carbon version, offers better weldability and resistance to sensitization.
| Property | SS 310 | SS 310S |
|---|---|---|
| Carbon Content | 0.25% max | 0.08% max |
| Tensile Strength | 75,000–105,000 psi (515–725 MPa) | 70,000–90,000 psi (480–620 MPa) |
| Yield Strength | 25,000–45,000 psi (170–310 MPa) | 25,000–35,000 psi (170–240 MPa) |
| Elongation | 40% in 8 inches (200 mm) | 35% in 8 inches (200 mm) |
| Applications | High-temperature, high-strength applications | Improved weldability, reduced carbon precipitation |
SS 904L is a high-alloy austenitic stainless steel that provides excellent corrosion resistance in highly aggressive environments, especially in the presence of sulfuric acid, phosphoric acid, and chlorides. Its unique composition makes it highly suitable for chemical processing, marine, and pollution control applications.
SS 904L is a high alloy stainless steel known for its excellent resistance to corrosion, particularly in aggressive environments such as acidic or marine applications. Below are the recognized international standards for SS 904L.
ASTM A240/A240M - Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.
Scope: Covers stainless steel plate, sheet, and strip of austenitic stainless steel, including SS 904L, intended for use in pressure vessels, reactors, and general applications requiring corrosion resistance.
Grades Covered: SS 904L is listed as a grade for use in demanding corrosion-resistant applications.
EN 10088-2 - Stainless Steels – Part 2: Technical Delivery Conditions for Sheet/Plate and Strip of Corrosion-Resistant Steels for General Purposes.
Scope: Specifies the technical delivery conditions for stainless steels, including SS 904L, in sheet, plate, and strip forms for general applications.
UNS Designation: N08904
The Universal Numbering System (UNS) assigns SS 904L the designation N08904 for identification in international material databases.
DIN 1.4539 - This is the German material number for SS 904L. The grade is recognized under DIN for use in applications requiring resistance to aggressive environments.
BS EN 10088-2:2005 - Stainless Steels – Part 2: Technical Delivery Conditions for Sheet/Plate and Strip of Corrosion-Resistant Steels for General Purposes.
Equivalent to EN 10088-2 and specifies delivery conditions for SS 904L.
ISO 9444-2 - Stainless Steel for General Applications – Part 2: Sheet and Plate.
Covers stainless steels, including SS 904L, for general applications.
| Property | Standard Specifications |
|---|---|
| UNS Designation | N08904 |
| ASTM | ASTM A240/A240M |
| EN | EN 10088-2 |
| DIN | DIN 1.4539 |
| BS | BS EN 10088-2:2005 |
| ISO | ISO 9444-2 |
SS 317L is a high-alloy austenitic stainless steel designed to provide improved resistance to corrosion in harsh environments compared to regular stainless steels. The addition of molybdenum (Mo) enhances its resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in environments containing chlorides. This makes it ideal for applications where exposure to aggressive chemicals and high temperatures is a concern.
| Property | SS 317L | SS 304L | SS 316L |
|---|---|---|---|
| Chromium Content | 18.0–20.0% | 18.0–20.0% | 16.0–18.0% |
| Nickel Content | 11.0–14.0% | 8.0–10.5% | 10.0–14.0% |
| Molybdenum Content | 3.0–4.0% | 0% | 2.0–3.0% |
| Tensile Strength | 70,000–85,000 psi (485–585 MPa) | 70,000 psi (485 MPa) | 70,000–100,000 psi (485–690 MPa) |
| Corrosion Resistance | Excellent, superior in chloride environments | Good, susceptible to pitting in chlorides | Excellent, but less resistant than 317L |
