The working principle of flared flange is that the flange is sleeved into the steel pipe, and the flared flange taper sleeve is put into the pipe and sealed No welding is needed when connecting with steel pipe, which is beneficial to fire prevention, explosion prevention and aerial work, and can eliminate the disadvantages caused by careless welding Therefore, flared flange is a relatively stable connector for the pipeline of automatic control device in oil refining, chemical industry, petroleum, natural gas, food and pharmaceutical instruments and meters

The flared flange comprises a pipe joint body with a through hole. At least one end of the pipe joint body is provided with a sealing device for sealing the pipe and a quick connecting device for connecting the pipe. The flared flange is provided with a locking cover for pressing sealing and quick connecting

The flared flange has simple structure, convenient operation, reduced cost and improved production efficiency

Flange pipe fittings are welded pipe fittings Such pipe fittings are used to match with pipes Some are processed and some are not processed Some castings are cast with flanges all together While the welded ones are post-processed Factory can be processed in the construction site can also be processed Pipe fittings with large and small flanges and elbow tee flange fittings Its materials are also various, such as carbon steel, alloy steel, stainless steel and so on

1. Divide by material:

Carbon steel: ASTM/ASME A234 WPBWPC

Alloy: ASTM/ASME A234 WP 1-WP 12-WP 11-WP 22-WP 5-WP 91-WP91115Mo3 15CrMoV35CrMoV

Stainless steel: ASTM/ASME A403 WP 304-304L-304H-304LN-304N

ASTM/ASME A403 WP 316-316L-316H-316LN-316N-316Ti

ASTM/ASME A403 WP 321-321H ASTM/ASME A403 WP 347-347H

Low temperature steel: ASTM/ASME A402 WPL3-WPL 6

High Performance Steel: ASTM/ASME A860 WPHY 42-46-52-60-65-70

Cast steel, alloy steel, stainless steel, copper, aluminum alloy, plastic, argon, PVCPPRRFPP (reinforced polypropylene), etc.

2. According to the manufacturing method, it can be divided into pushing, pressing, forging and casting, etc.

3. According to the manufacturing standards, it can be divided into national standard, electric standard, ship standard, water standard, American standard, German standard, Japanese standard and Russian standard

4. According to its curvature radius, it can be divided into long radius elbow and short radius elbow Long radius elbow refers to the outer diameter of a pipe whose curvature radius is equal to 1.5 times, that is, R = 1.5 D; Short radius elbow means that its curvature radius is equal to the outer diameter of pipe, that is, R=1. 0D (D is the elbow diameter R is the radius of curvature)

5. According to the pressure grade, there are about seventeen kinds of pipes that are the same as the American standard: Sch5sSch10sSch10Sch 20Sch 30Sch 40SSTDSch40Sch 60Sch 80SXS; Sch80SCH100Sch120Sch140Sch160XXS; Among them, STD and XS are the most commonly used

Order code and description:
① Weitong flange
② * indicates flange welded pipe assembly;
ASD/ASFN/BSF/CSF/DSF/ESF/FSF/AWF for flanged welded pipe assemblies
For example, if you need O-ring and bolt assembly of welded pipe with O-groove for split flange, please change * to ASF
③ Product model
④ da × t is the size of butt welding part of welded pipe (outer diameter × wall thickness)
⑤ */* indicates flange material/welded pipe material
1. Stainless steel materials are divided into:
304 (1.4301); 316 (14401); 316L (1.4404); 316TI (1.4571)
For example, the flange material you choose is 20 # steel without coating and oxidation treatment, and the welded pipe material is 304 (1.4301).
Please change */"to C20A/3042 carbon steel materials are:
C20/C45/CQ235, no coating oil;
C20A/C45A/CQ235A, no coating oxidation treatment;
C20B/C45B/CQ235B white zinc plating;
C20C/C45C/CQ235C, galvanized pure yellow;
C20D/C45D/CQ235D, oxidation treatment;
⑥ Bolt M: Metric screw U: UNC bolt
For example, if you choose metric bolts, please change * to M;
If you select UNC bolts, change * to U
No need to prepare bolts * No need to fill in the part