|Flange America standard||1/2"~100"||DN15-DN2500||Class150~Class2500|
|Flange Europe standard||1/2"~100"||DN15-DN2500||PN2.5~PN400|
|Austenitic stainless steel||Super duplex stainless steel||Nickel-based alloy steel||Carbon steel/alloy steel||Other materials|
|304 304L 304H 304LN||S31803 S32205||N10276 N04400 N06600||Q235 20# 20G||TA1 TA2 TA3 TC1~TC9|
|316 316L 316H 316Ti||S32304 S32760||N06600 N06625 N06690||WPB A105 16Mn||LF2 LF3 LF5 LF6 LF10|
|310S 321 321H 347||S32550 S32750||N08800 N08825 N08904||45# 15CrMo||Al, Ti, martensite|
|S31254||S33400||N08020 N08810 N08811||A350LF2 A420Gr.WPL6|
Threaded pipe flange is threaded in the bore which matches an external thread on the pipe. It is easy to be installed and maintained, and can be applied in some pipelines where welding treatment is not allowed. For pipelines where there is a rapid temperature change or the temperature is lower than -45℃ or higher than 260℃, threaded flange is not suggested in case of leakage. To ensure a high pressure rating, screwed flanges are generally fabricated from die stamping and machining techniques instead of welding or casting.
Yuanyang's commitment to quality is evident in every step of our process: the steel pipes, strips, bars, and sheets are purchased from trustworthy manufactruers; materials are marked with different colors so that they are easily distinguished; and 100% spectral detection is conducted for all of the finished fittings before shipping.