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Carbon Steel a105 Ansi Flange Specification
Cangzhou Weiheng Pipe Industry Co., Ltd,

We specialized in manufacturing the high quality Carbon Steel Flange for more than 20 years since 1993.
We specialized in manufacturing the carbon steel pipe and carbon steel pipe fittings (elbows, reducers, tees, pipe caps, flanges) for more than 20 years since 1993.
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We also provide Alloy steel Pipe Cap, Alloy Steel Tee, bend Pipe, Seamless bend and soon

Carbon Steel Forged Weld Neck Flange
A carbon steel weld neck flange is a type of flange used in piping systems. It is made from carbon steel, which is a common and widely used material in various industries due to its strength and durability. The weld neck flange is specifically designed to be butt-welded to the pipe, providing a strong and leak-proof connection.
Description
Carbon steel weld neck flange is made of carbon steel with a forging process, It consists of a circular fitting with a protruding rim around the circumference. These flanges are typically butt welded to a pipe, the rim has a series of drilled holes that permit the flange to be affixed to another flange with bolts.

Design: A weld neck flange has a long tapered hub that is welded to the pipe, providing reinforcement and stability to the joint. The flange also has a flat, circular plate with bolt holes to connect it to another flange or equipment.

Welding: The flanges are designed to be welded to the pipe or fitting. The neck of the flange is welded to the pipe, creating a strong and leak-resistant connection.

Size Range: The flanges are available in a wide range of sizes to accommodate different pipe diameters and system requirements.

Applications: Carbon steel weld neck flanges are commonly used in industries such as oil and gas, petrochemical, power generation, and water treatment. They are suitable for high-temperature and high-pressure applications.

Advantages:
Provides excellent structural support and stability to the joint.

Reduces stress concentration at the base of the flange due to its tapered design.

Offers good resistance to corrosion and high temperatures when made from carbon steel.

What is a blind flange
A blind flange is a solid disc that is used to block a pipe or form a stop. Similar to a regular flange, a blind flange has mounting holes at the perimeter and gasket sealing rings machined into the mating surface. the blind flange has the face thickness of a flange, matching face type and a similar bolting pattern.

Blind flanges are typically used to enclose the end of a pipe. They are also used for similar valve and pressure vessel openings. Because they are usually located at the end of a system, these flanges are usually among the highest stress flange types. tapped blind flange is only suitable for low-pressure systems where there is no thermal cycling that could cause thread loosening. Threaded pipe flanges are equipped with a tapered female thread into which the pipe can be screwed. tapped blind flange can be used in areas where thermal processing (welding, burning and grinding) is not desired.



Flange Materials.
Carbon Steel - ASTM/ASME SA-105, A-350 LF-2, LF-3, A694, SA-516-70

Stainless Steel - A-182 - F-304, 304L, 316, 316L, 309, 310, 317L, 321, 347, Alloy 20

In specifications of past decades, including B16.1 and other industry standard cast steel requirements, blind flanges typically contain a slight groove in the center portion of the convex face. This recess allows the pipe end to fit into the connection flange and allows a seal to be formed between this connection flange and the blind. Larger OD blind flanges have opted for a concave recess through the body of the shutter to create a disc-shaped head structure at the top of the flange. Because older cast iron specifications are relatively obsolete, these styles are not used to make most blind flanges. Instead, choose a modern blind flange with or without a hub.

Fusion Fittings offers threaded pipe flanges in A105N, A105, SS316, SS304, and A20, high-yield nickel alloys

Stainless steel flanges connect with pipe and fittings to form a piping system that delivers air, water, natural gas, oil, and steam in plumbing applications and food and dairy processing. Flanges provide easy access for cleaning, inspection, and modification. Flange types including blind, butt weld, lap joint, slip-on, socket weld, and threaded, are available in a variety of sizes and shapes. Stainless steel is durable, resists corrosion from caustic chemicals, corrosive fluids, oils, and gases, and withstands pressure and high temperatures.

Keywords: Welding Neck Flange,Blind Flange,Socket Weld Flange.Lapped Joint Flange,Slip-on Flange,Plate Flange
Size: NPS from 1/2'' to 24'', CLASS from 150 to 2500
Standard: ANSI/ASME B 16.5, DIN, JIS, AWWA, API, ISO etc
Material: Carbon Steel --- ASTM A105,ASTM A350 LF1,LF2,LF3,A36,ASTM A234 WPB;Stainless Steel --- ASTM A403 F304/304L, 316/316L,316Ti,321,317L,310S;Alloy Steel --- ASTM A234 WP1/5/9/11/12/22/91
Ends: Square Ends/Plain Ends (straight cut, saw cut, torch cut), Beveled/Threaded Ends

Material Alloy steel (ASTM A234 WP12/WP11/WP22/WP5/WP9/WP91)
Stainless steel (ASTM A403 WP304/WP304L/WP316/WP316L)
Carbon steel (ASTM A234WPS, A234WPC, A420 WPL6), St45.8 A105 A106 STG42)
Standard ASME B16.5 MSS SP44 Gost JIS etc
Type WN FLANGE, SO FALNGE, LAP JOINT FALNGE, THREADED FLANGE, SOCKET FLANGE , BLIND FLANGE
Pressure class 150 class 300 class 600 class 900 class 1500 PN6 PN16 PN25 PN40 PN100......
Size 1/2-80 inch (DN15-DN2000)
Surface treatment Anti-rust Oil, Transparent/Yellow/Black Anti-rust Paint,Zinc,
Hot dipped Galvanized.
Inspection Factory in-house self check or Third Party inspection
Packing Wooden case, pallet or as customers requirement
Applications Petroleum,chemical,power,gas,metallurgy, shipbuilding, construction, etc
Heat Treatment Normalizing, Annealing, Quenching+Tempering
Payment L/C T/T

Quick information, brand name:dyft, place of origin:china, size :from 1/2, pressure :sch5s-sch160, material :carbon steel and some spe, standards :asme/ansi, din, jis, using :petroleum, chemical, power, description, concrete pump pipe flange data, , , specification, 1)size: from 1/2" to 48", dn15 - dn1200, 2)pressure: sch5s-sch160, 3) material: carbon, steel and some special materials., 4)standards:asme/ansi, din, jis