So Carbon Steel Flat Welded Flange Hip Welding Flange Is in Stock

• Customization: Available
• Standard: BSW
• Type: Welding Flange
• Model NO.: DN80
• Material: Carbon Steel
• Structure: Flanges
• Connection: Screws
• Manufacturing Way: Forging
• Connection Method: Flat Welding, Butt Welding, Socket Welding, Thread
• Sealed Surface Form: Face (FF), Convex Surface (RF), Concave and Convex
• Common Materials: Carbon Steel (Such as Q235, 20# Steel), Stainless
• Sealability: The Gasket Is Relied Upon to Fill The Gap Between
• Scene: It Is Widely Used in Industries Such as Chemical E
• Installation Attributes: During Installation, It Is Necessary to Ensure Tha
• English: It Consists of a Flange, Bolts, Nuts and Gaskets,
• Customizable Properties: Custom Non-Standard Flanges: for Special Working C
• Economic Attributes: Cost Differences: Material, Specifications, and Ma
• Compatibility Property: Cross-System Adaptation: It Is Necessary to Match
• Environmental Adaptability Attribute: Weather Resistance: Flanges Used Outdoors Must HAV
• Security Attributes: Explosion-Proof Design: in Flammable and Explosive
• Transport Package: Wooden Box
• Specification: ASMEstandard
• Trademark: hanyuan
• Origin: China
• HS Code: 8901101010
• Production Capacity: 500000

Product Description

Carbon Steel Flanges Product Introduction

1. Definition

Carbon steel flanges are flange discs or end flange connectors mainly made of carbon steel. They are crucial components in piping systems, used for connecting pipes, valves, pumps, and other equipment, ensuring reliable connections and leak - tight seals.

2. Materials

Common carbon steel materials for flanges include:

Material Grade	Characteristics	Application Range
A105 (Forged)	Good comprehensive mechanical properties, suitable for general - purpose applications.	Widely used in various industrial piping systems under normal temperature and pressure conditions.
WCB (Cast)	Good casting performance, can be used to produce complex - shaped flanges.	Often applied in low - to - medium - pressure pipelines in industries such as water supply and drainage, and general - purpose industrial pipelines.
Q235B	Economical and practical, with relatively good processability.	Used in some non - critical piping systems where the requirements for material performance are not extremely high.
16Mn	Higher strength than ordinary carbon steel, with better toughness.	Suitable for pipelines in environments with certain pressure and temperature requirements, such as some petrochemical and power - related pipelines.

3. Standards

Carbon steel flanges are manufactured and used in accordance with a variety of standards, including:

Standard Organization	Standard Number	Main Application Fields
ANSI (American National Standards Institute)	ANSI B16.5	Widely used in American - standard piping systems, especially in the oil and gas, chemical, and power industries in the United States.
ASME (American Society of Mechanical Engineers)	ASME B16.47	Applicable to large - diameter flanges in high - pressure and high - temperature piping systems.
DIN (Deutsches Institut für Normung)	DIN series (e.g., DIN 2527, DIN 2566)	Used in German - standard and some European - standard piping systems, commonly seen in the chemical, mechanical, and power industries in Europe.
EN (European Norm)	EN1092 - 1	Adopted in European - wide piping system design and construction, ensuring compatibility and quality in the European market.
JB (Mechanical Industry Standard of China)	JB/T81 - 94, JB/T79.4 - 94, etc.	Applied in Chinese - domestic mechanical and industrial piping systems, covering a wide range of industries such as machinery manufacturing, petrochemical, and power generation.
HG (Chemical Industry Standard of China)	HG20593 - 97, HG20617 - 97	Specifically for chemical - industry - related piping systems in China, ensuring safety and reliability in chemical production processes.

4. Types

Carbon steel flanges come in various types, each with its own characteristics and application scenarios:

Type of Flange	Connection Method	Characteristics	Application Scenarios
Weld Neck Flange	Welded to the pipe, with a tapered neck for smooth stress transfer.	High strength, suitable for high - pressure and high - temperature applications. Good fatigue resistance.	Petrochemical plants, power generation facilities, high - pressure gas and liquid pipelines.
Slip - on Flange	Slips over the pipe and is welded on both sides.	Easy to install, cost - effective. However, not as strong as weld neck flanges in high - stress situations.	General industrial pipelines, water supply and drainage systems, where the pressure and temperature are not extremely high.
Blind Flange	A solid disc used to seal the end of a pipe or vessel.	Seals the pipeline completely, preventing fluid leakage. Used for pipeline maintenance, inspection, or when a section of the pipeline needs to be isolated.	Pipeline shutdowns for maintenance, blanking of unused pipeline branches.
Socket Weld Flange	The pipe is inserted into the socket of the flange and welded.	Suitable for small - diameter pipes, provides a reliable connection. Reduces the risk of internal corrosion as there is no crevice at the joint.	Instrumentation pipelines, small - bore process pipelines in refineries and chemical plants.
Threaded Flange	Connects to the pipe through threads.	Easy to assemble and disassemble without the need for welding. But not suitable for high - pressure or high - temperature applications due to potential leakage at the threaded joint.	Low - pressure air, water, and some non - corrosive fluid pipelines in light industrial and building services.
Lap Joint Flange	Consists of a loose flange and a stub end. The stub end is welded to the pipe, and the flange can rotate around it for easy alignment.	Allows for easy alignment during installation. Reduces stress concentration on the pipe.	Piping systems where frequent disassembly and reassembly are required, such as some laboratory or experimental pipelines.

5. Parameters

5.1 Pressure - Temperature Ratings

Class (ANSI) / PN (Metric)	Temperature Range (°C)	Maximum Allowable Pressure (MPa)
Class 150 / PN2.0	- 29 to 343	2.0
Class 300 / PN5.0	- 29 to 427	5.0
Class 600 / PN11.0	- 29 to 454	11.0
Class 900 / PN15.0	- 29 to 454	15.0
Class 1500 / PN26.0	- 29 to 454	26.0
Class 2500 / PN42.0	- 29 to 454	42.0

5.2 Dimensions

Nominal Pipe Size (NPS) / DN	Outside Diameter of Flange (mm)	Bolt Circle Diameter (mm)	Number of Bolts	Bolt Size (mm)	Thickness of Flange (mm)
1/2" / DN15	90	60.5	4	M14	14.5
3/4" / DN20	100	70	4	M14	16
1" / DN25	110	79.5	4	M14	17.5
1 1/4" / DN32	120	89	4	M16	19
1 1/2" / DN40	130	98.5	4	M16	20.5
2" / DN50	150	120.5	4	M16	22.5
2 1/2" / DN65	180	139.5	8	M16	25.5
3" / DN80	190	152.5	8	M16	29
4" / DN100	230	190.5	8	M20	32
6" / DN150	300	254	8	M24	37
8" / DN200	360	317.5	12	M24	41.5
10" / DN250	430	381	12	M27	48
12" / DN300	490	444.5	16	M27	54

6. Application

Carbon steel flanges are widely used in various industries:

• Petroleum and Gas Industry: In oil and gas exploration, production, transportation, and refining processes, carbon steel flanges are used to connect pipelines, valves, and equipment. They need to withstand high - pressure and high - temperature fluids, as well as corrosive media.

• Power Generation Industry: Whether in thermal power plants, hydropower plants, or nuclear power plants, carbon steel flanges are used in the piping systems for steam, water, and other working fluids. For example, in a thermal power plant, they connect the steam pipelines from the boiler to the turbine, ensuring efficient power generation.

• Chemical Industry: In chemical production, carbon steel flanges are used to connect pipelines carrying various chemical media, such as acids, alkalis, and organic solvents. They must have good corrosion resistance and strength to ensure the safe operation of the chemical process.

• Water Supply and Drainage Industry: In urban water supply and drainage systems, carbon steel flanges are used to connect water pipes, sewage pipes, and related equipment. They help to ensure the smooth flow of water and prevent leakage, providing reliable water supply and sewage treatment services.

• Mechanical Manufacturing Industry: In machinery manufacturing, carbon steel flanges are used in the piping systems of various mechanical equipment, such as compressors, pumps, and heat exchangers. They play an important role in ensuring the normal operation of the equipment.