Welding Neck Flange (Code SO)
The full name is “Welding Neck Flat-Face Flange,” designated as SO. Its defining feature is its short-neck structure; after the pipe is inserted into the flange’s neck opening, it is connected by a flat weld (with the weld located on the outer side of the flange neck).
- Commodity name： Welding Neck Flange (Code SO)
Keywords:
Flange
Metal pipe fittings
- Product Description
-
1. Product Type
The full name is “Welding Neck Flat-Face Flange,” designated as SO. Its defining feature is a short-neck structure; after the pipe is inserted into the flange’s neck opening, it is connected by flat welding (with the weld located on the outer side of the flange neck).
2. Core Parameters
- Connection method: Butt weld (pipe inserted into the neck, with a fillet weld).
- Sealing surface types: Common types include flat face (RF) and male-female face (MFM); by default, the flat face (RF) is most commonly used.
- Pressure rating: Compatible with PN6 to PN160 (0.6 to 16 MPa), Class 150 to 900 (American standard), suitable for medium- and low-pressure applications.
- Specification range: Nominal diameter DN10 to DN2000 (corresponding pipe diameters from 1/2" to 48").
- Materials: Carbon steel (20#, Q235), stainless steel (304, 316L), alloy steel, etc., available upon request.
3. Product Features
- High cost-effectiveness: The necked structure enhances rigidity, yet the flat-welding process is simpler and less costly than the weld-neck (WN) joint.
- Easy installation: After the pipe is inserted, it can be directly welded, requiring low construction expertise and making maintenance, disassembly, and inspection convenient.
- Application scenarios: Suitable for medium- and low-pressure, normal- and medium-temperature pipeline systems in petrochemicals, municipal water supply and drainage, HVAC, and other fields.
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Yes we have professional engineer teams. We can deisgn and produce special products According to customers' request.
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Yes we welcome your visiting us someday at your convenience.
What is the payment terms?
We accept T/T, L/C at sight, PayPal & West union.
What is your deivery time?
Our delivery time is normally 7 to 15 days after deposit.
Do you provide free sample?
YES, we supply you free sample within one day.
Are you manufacture?
YES we are manufacturer.
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We accept a variety of internationally recognized payment methods, including primarily T/T (telegraphic transfer) and L/C (letter of credit). The T/T payment method is convenient—simply remit funds according to the bank account information we provide. The L/C payment method ensures transaction security through bank credit; we can accept an irrevocable sight letter of credit. Additionally, for certain long-term, stable partners who have been thoroughly evaluated, we can negotiate other suitable payment methods, such as PayPal, though the specific terms will be determined based on actual circumstances.
Are you a manufacturer?
As a comprehensive enterprise integrating processing, manufacturing, sales, and export, our factory boasts advanced production workshops and equipment, as well as solid process technology. Our main products include pipe fittings such as elbows, tees, flanges, and reducers, which are widely used in various industries including shipbuilding, petrochemicals, natural gas, and power plants. We export these products to countries including the United States, South Korea, Canada, Australia, Singapore, Turkey, and India.
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We not only sell products but also provide services, and we have a comprehensive after-sales service system.
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Related products
American Standard Welding Flange
Seeking cooperation
Cangzhou Yasheng Pipeline Manufacturing Co., Ltd. specializes in the R&D, production, and sales of products such as tees, elbows, flanges, special-shaped pipes, pipe fittings, and support hangers, providing high-quality pipeline system solutions to customers worldwide.
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North Second Ring Road, Yanshan County, Cangzhou City, Hebei Province