1. ASTM A815 S31803 REDUCING TEE ORDER INFORMATION

2. What is ASTM A815?

It is standard specification for Wrought Ferritic, Ferritic/Austenitic, and Martensitic Stainless Steel Piping Fitting.

This specification covers two general classes, WP and CR. Class WP fittings are subdivided into four classes:

• WP-S, seamless products.
• WP-W, welded products.
• WP-WX, Pipe fittings which contain welds where all welds have been radiographed.
• WP-WU, fittings that contain welds where all welds have been ultrasonically tested.

3. UNS S31803 REDUCING TEE

Working Temperature

UNS S31803 has a high content of chromium, making the equal tee has good corrosion resistance. Even in chloride and sulphide environments, it exhibits very high resistance to stress corrosion cracking. But it will causes embrittlement at temperatures over 300°C.

Besides, UNS S31803 Equal TEE has good strength and elongation. And at low temperature, its notch ductility is better than ferritic and martensitic grades. Its working temperature at least is -50°C.

So this kind of stainless steel fittings is ideal for low temperature applications.

Duplex Steel Butt Weld Fittings are typically used in:

• Chemical processing, transport and storage
• Oil and gas exploration and offshore rigs
• Marine environments
• Pollution control equipment

4. UNS S31803 Tee Chemical Composition %

5. UNS S31803 Tee Mechanical Properties

6. ASTM A815 UNS S31803 Duplex Steel Pipe Fittings,

Duplex steel ASTM A815 Fittings Weldability

As a Butt Weld Equal Tee, the weld-ability is important. ASTM A815 Duplex Steel Equal Tee has good weld-ability.

Though the weld-ability of UNS S31803 Butt Weld Fittings is not as good as Austenite, but its low thermal expansion can reduce the deformation and residual stress after welding.

Huitong Group was established in 1978. After 38 years'development and innovation,by now,Huitong Group has set up multiple subsidiary companies.Among them,Zhengzhou Huitong Pipe Fitting Co.,Ltd.,with the indepent right of import and export, is mainly engaged in exporting steel pipe and pipe fittings for Huitong Group and assisting another subsidiary company of Huitong Group:Zhengzhou Huitong Machanical Equipment Co.,Ltd., in exporting machanical equipment.

Zhengzhou Huitong Pipeline Equipment Co.,Ltd.,with the strong support of Huitong Group,and years'development and innovation, are more and more professional in technical service and can manufacure products with all kinds of material,shape and size. Especially in elbows, tee, reducer, flange and pipe cap etc., we have gained more than 20 product patent, and hundreds of technology patent. Also,we have gradually taken an ireplacable role in High-pressure,high-temperature and anti-corrosion area. With the continuous construction of engery in China,such as petrol gas,electric power,etc.,our company has become the purchasing center of whole set fittings for such projects.In 2009,a foreign trade team established,is manily engaged in oil gas and electric power projects abroad.By now, our products have been exported to

Canada,Malaysia,Parkistan,UAE, Eygpt,the Middle East countries, etc.. We have passed the qualification of ISO9001:2000 and API quality certification system. High-quality products and high-class service are well received by abroad customers in this industry. The unique diversified production line can offer you one-package serive, you can pruchase all complex products from us at one time. What's more, our sufficient material stock and conventional product stock can ensure you receive satisfied product in the shortest time.

With powerful financial strength,advanced managerial concept, excellent marketing service,strict quality control system and integrated marketing team,we would like to develop together with you hand in hand. Adhering to the operation principle of "faith first and clients foremost", we always supply high quality products, complete after-sales service and favorable prices. We sincerely hope to establish long-term cooperation with you on the basis of mutual benefits, reciprocity and common development.

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