Overview of Stainless Steel Lap Joint Flange
A stainless steel lap joint flange is a specialized type of pipe flange used in piping systems where ease of assembly, disassembly, and alignment are critical. It consists of two components: a stub end and a backing flange. The stub end, made of stainless steel, is welded to the pipe, while the backing flange, which can be made of stainless steel or a less expensive material, slides over the stub end and rotates freely. This design allows for easy alignment of bolt holes during installation and is particularly useful in systems requiring frequent maintenance or inspection.
Stainless Steel Flange Mill Test Certificates
Stainless steel flange MTC is the official documents to confirm the quality,chemical composition,mechanical properties of stainless steel materials used to produce the flanges,we can guarantee that our products meets the standard and customers’ requirement.
Manufacturing Processing
The manufacturing process of a stainless steel blind flange involves several steps to ensure the final product meets the required specifications and standards. Below is a detailed description of the process:
Specification of Stainless Steel Flange
| NPS | Pressure Rating | Material | Standard | Flange Face | |||
| DN15-DN3000 1/2"-120" | Class150- Class2500, PN10 - PN160 | Stainless steel | Duplex Steel | Alloy steel: | ASTM B16.5, ASTM B16.47, MSS SP44, EN1092-1, ASTM A182, JIS B2220, BS 4504, SABS/SANS1123, AWWA C207 | Ring Type Joint (RTJ), Flat Face (FF), Raised Face (RF) | |
| 31254, 904/L 347/H, 317/L 310S, 309 316Ti, 321/H 304/L, 304H 316/L, 316H | UNS S31803, S32205, S32750, S32760 | N04400, N08800 N08810, N08811 N08825, N08020 N08031, N06600 N06625, N08926 N08031, N10276 | |||||
| Other requirements as per customers' design and drawings. | |||||||
Type of packaging
– Wooden box for small diameter flanges
– Iron frame for large diameter flanges
