SS304L Threaded Flange

Zizi is leading manufacturer and exporter of stainless steel forged flanges and offers Class 300 NPT Threaded Flange SS 304L for industrial application.

Stainless steel 304 / 304L Threaded flanges offer excellent corrosion resistance and welding free. It can be used for pipelines with high pressure or poor welding performance, but it is not recommended for pipe systems where the temperature is too high or too low. Maintenance is also very convenient.

Zizi also offers forged threaded fittings in diverse types, dimensions and materials.

300# NPT Threaded Flange

Product: Threaded Flange

Standard: ASME B16.5

Diameter: 3”

Pressure: Class 300 NPT Threaded Flange

Thread: NPT

Seal Face: RF

Material: ASTM A182 F304L

Package of 300# NPT Threaded Flange

First, brush anti rust oil at the surface of 3” Class 300 NPT Threaded Flange.

Second, wrapped water proof film for each of them.

Third, put them in carton cases, each cases should label with product name, size, material and quantity at the outside.

Finally, placed them all into wooden box.

Stainless Steel Flange Package

Inspection of Stainless Steel Threaded Flange

• Hand touch and observed the surface of threaded flanges.
• Check the marking of 3” Class 300 NPT threaded flanges, ensure the marking is clear, correct and beautiful.
• Measure the size such as outside diameter, thickness, raised face diameter.
• Test the chemical composition of stainless steel 304l.

ASME B16.5 Threaded Flange Dimensions

Class 300 NPT Threaded Flange Dimensions

Material Grades for 300# NPT Threaded Flange

Nickel Alloy: 
ASTM / ASME SB 336, ASTM / ASME SB 564 / 160 / 163 / 472, UNS 2200 (NICKEL 200) , UNS 2201 (NICKEL 201 ) , UNS 4400 (MONEL 400 ) , UNS 8020 ( ALLOY 20 / 20 CB 3 ) , UNS 8825 INCONEL (825) , UNS 6600 (INCONEL 600 ) , UNS 6601 (INCONEL 601) , UNS 6625 (INCONEL 625) , UNS 10276 (HASTELLOY C 276)

Stainless Steel Class 300 NPT Threaded Flange: 
ASTM A182 F304, F304L, F306, F316L, F304H, F309S, F309H, F310S, F310H, F316TI, F316H, F316LN, F317, F317L, F321, F321H, F11, F22, F91, F347, F347H, F454L, ASTM A312/A403 TP304, TP304L, TP316, TP316L

Duplex & Super Duplex Steel: 
ASTM A 182 – F 51, F53, F55 S 31803, S 32205, S 32550, S 32750, S 32760, S 32950.

Carbon Steel: 
ASTM/ ASME A 105, ASTM/ ASME A 350 LF 2, ASTM / ASME A 53 GR. A & B, ASTM A 106 GR. A, B & C. API 5L GR. B, API 5L X 42, X 46, X 52, X 60, X 65 & X 70. ASTM / ASME A 691 GR A, B & C

Alloy Steel: 
ASTM / ASME A 182, ASTM / ASME A 335, ASTM / ASME A 234 GR P 1, P 5, P 9, P 11, P 12, P 22, P 23, P 91, ASTM / ASME A 691 GR 1 CR, 1 1/4 CR, 2 1/4 CR, 5 CR, 9CR, 91

Copper Alloy Steel: ASTM / ASME SB 111 UNS NO. C 10100 , C 10200 , C 10300 , C 10800 , C 12000, C 12200, C 70600 C 71500, ASTM / ASME SB 466 UNS NO. C 70600 ( CU -NI- 45/10) , C 71500 ( CU -NI- 70/30)