What is Duplex Stainless Steel Pipe?.

Duplex Stainless Steel (DSS) including grades duplex 2205(S31803) and very duplex, they are usually comprise of half ferrite and half austenite, and for the most part requires at least 30%. Duplex tempered steel has great welding execution and high strength. Contrasted and austenitic treated steel, it is about twofold yield strength of hardened steel 316, 317 and so forth, it make the hardware lighter and more grounded. Duplex Stainless steel pipe has awesome protection from confined consumption and stress erosion breaking. Duplex steel isn't planned to be utilized at temperatures above 300°C because of embrittlement, the persistent use temperature is from - 50 to 250 °C.

 

2507 Super Duplex Pipe

 

Duplex and Super Duplex Grade:

Duplex Stainlss Steel SAF 2205(UNS S32205, S31803), Super duplex SAF 2507 (UNS S32750), S32760, S32304 and so on. SAF 2205 is the most widely recognized grade for duplex tempered steel, ASME/ASTM grade is UNS S32205 or the comparative grade S31803 , identical to EN/DIN 1.4462.

SAF 2507 is a very duplex steel, the ASTM grade is S32750, identical to EN/DIN 1.4410. We can supply duplex lines and fittings with great , factory cost and quick conveyance time. Duplex 2205 and very duplex 2507 is the normal grade for us. For different grades, we can producing and give at significant request amount.

 

What is PREN for DSS and SDSS Pipe

What is PREN - Pitting Resistance Equivalent Number, curtailed as PREN, is a bunch of calculations determined based on the mass part of specific components in the metal. The worth is many times utilized in the assessment technique for examination of pitting erosion obstruction.

 

There is an equation for PREN working out:

 

PREN=Cr%+3.3 *?Mo+0.5W?%+16 *N%

 

According to ASTM A790, PREN of 22 Cr duplex 2205 line is >31, and 25 Cr very duplex line is more than 40. Assuming you have unique necessity, you are free to reach us, our plant can acknowledge altered creation.

 

How We Help 2205 Duplex Pipe:

As professoinal duplex line provider, our processing plant is primarily center around the assembling of duplex treated steel pipe, with great experience and dependable quality control framework. These days, Kaysuns supplies both duplex treated steel line and very duplex hardened steel lines and cylinders adjust to standard ASTM A790, ASTM A789, EN 10216-5 and so on.

SAF 2507 Super duplex line is a very duplex steel pipe with 25% chromium, 4%super duplex 2507 line molybdenum, and 7% nickel. The normal grade of very duplex steel is SAF 5027 (S32750, S32760), they have comparable creation and mechanical properties. The high chromium, molybdenum, and nitrogen levels give amazing protection from pitting, fissure, and general consumption. Contrasted with duplex treated steel pipe, SAF 2507 very duplex line is profoundly impervious to uniform consumption by natural acids like formic and acidic corrosive.

 

*Very duplex S32760 is definitely not a typical grade in China, so we may couldn't offer it with little amount for lines and butt-weld fittings. In any case, it is accessible for fashioned fittings and spines.

 

Assembling of DSS and SDSS Pipe

Cold drawn and cold rolled is the for the most part process for consistent duplex tempered steel pipe. Because of the material attribute of high strength and hardness, duplex steel is more challenging to process than austenitic steel. It is extremely simple to harm, particularly for little thickness and enormous measurement pipes , it has a long and diligent techniques, that is the reason the conveyance season of duplex line.