Description

Long Weld Neck Flanges include a long tapered hub that aid in reinforcement and provide temperature/pressure resistance. Bored to match the inside diameter of the mating pipe or fitting, these flanges are directly welded to the end of the pipe.

As a premium Manufacturer & Exporter, Estan pipe fittings offers a variety of industrial pipe flanges to satisfy your specific requirements, which include weld neck flange, slip on flange, threaded flange, socket weld flange, lap joint flange, blind flange, spectacle blank flange, orifice flange and so on. Our products are made in accordance with ISO 9001-2015, Pressure Equipment Directive 2014/68/EU (PED 2014/68/EU), AD2000 Merkblatt W0, and API standard.

Long Weld Neck Flange Specification

Size	NPS 1/2″~24″ (15NB-600NB), NPS 26″~60″
Pressure	ASME/ANSI Series: Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500 EN Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40, PN 63, PN 100, PN 160, PN 250, PN 320, PN 400 BS Series: PN 2.5, PN 6, PN 10, PN 16, PN 25, PN 40 DIN Series: PN 6, PN 10, PN 16, PN 25, PN 40 GOST Series: PN 6, PN 10, PN 16, PN 25, PN 40 BS Tabled Series: Table D/E/F/H JIS Series: 2K, 5K, 10K, 16K, 20K, 30K, 40K, 63K SANS/SABS Series: 600Kpa, 1000Kpa, 1600Kpa, 2500Kpa, 4000Kpa API Series: 2000Psi, 3000Psi, 5000, 10000Psi, 15000Psi, 20000Psi
Flange Face Type	ASME/ANSI Series: Flat Face(FF), Raised Face(RF), Tongue(T), Groove(G), Female(F), Male(M), Ring type Joint Face(RTJ) EN Series: Type A(Flat Face), Type B(Raised Face), Type C(Tongue), Type D(Groove), Type E(Spigot), Type F(Recess), Type G(O-Ring Spigot), Type H (O-Ring Groove) GOST Series: Type 1, 2, 3, 4, 5, 6, 7, 8, 9
Standards	ASME B16.5 Flanges, ASME B16.47 series A / B Flanges API 6A/6B Flanges EN 1092-1 Flanges JIS B2220 Flanges MSS SP-44 Flanges BS 4504 Flanges, BS TABLE D/E/F/H Flanges GOST 12820-80 Flanges, GOST 12821-80 Flanges DIN Flanges (DIN2627, DIN2628, DIN2629, DIN2630, DIN2631,DIN2632, DIN2633, DIN2634, DIN2635, DIN2636, DIN2637,DIN2638) GB/T 9112-2010, GB/T 9115-2010, GB/T 13402-2010 HG/T 20592-2009, HG/T 20615-2009, HG/T 20623-2009 SANS1123 Flanges, SABS 1123 Flanges ISO 7005-1 Flanges
Coating/ SurfaceTreatment	Antirust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Value-Added Services	CNC Machining, Customised Flanges as per the drawing

Long Weld Neck Flange Material Types & Grades

Stainless Steel Long Weld Neck Flanges: ASTM A 182, A 240 F 304, 304L, 304H, 316, 316L, 316Ti, 310, 310S, 321, 321H, 317, 347, 347H, 904L
Carbon Steel Long Weld Neck Flanges: ASTM / ASME A/SA 105, ASTM / ASME A 350, ASTM A 181 LF 2 / A516 Gr.70, A36, A694 F42, F46, F52, F60, F65, F70
Alloy Steel Long Weld Neck Flanges: ASTM / ASME A/SA 182 & A 387 F1, F5, F9, F11, F12, F22, F91
Duplex & Super Duplex Steel Long Weld Neck Flanges: ASTM / ASME A/SA 182 F 44, F 45, F51, F 53, F 55, F 60, F 61

Low Temperature Carbon Steel Long Weld Neck Flanges: ASTM A350, LF2, LF3
Copper Alloy Steel Long Weld Neck Flanges: UNS No. C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS No. C 10100, 10200, 10300, 10800, 12000, 12200
Nickel Alloy Long Weld Neck Flanges: Nickel 200 (UNS No. N02200), Nickel 201 (UNS No. N02201), Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500), Inconel 800 (UNS No. N08800), Inconel 825 (UNS No. N08825), Inconel 600 (UNS No. N06600), Inconel 625 (UNS No. N06625), Inconel 601 (UNS No. N06601), Hastelloy C 276 (UNS No. N10276), Alloy 20 (UNS No. N08020), Titanium Gr I/II

Available Certificates

Manufacturer Test Certificate as per EN 10204 3.1, Third-Party Inspection Report as per EN 10204 3.2, Non-destructive Testing / NDT Report

Applications:

1. Oil and gas industry
2. Petrochemical industry
3. Power generation industry
4. Pharmaceutical industry
5. Shipbuilding industry
6. Papermaking industry
7. Metallurgy industry