WP-S UNS S31803 Equal Tee

Singapore client purchased some 12” ASTM A815 WP-S UNS S31803 Equal Tee with other Duplex Steel Pipe Fittings from us. Let’s the more details.

By this chance we would like to introduce what is ASTM A815 WP-S UNS S31803 Equal Tee and its applications this time.

Purchase Order

ASTM A815 UNS S31803 Tee

Equal Tee ASTM A815 WP-S UNS S31803 is a Duplex Stainless Steel Tee. It is ferrite or austenite stainless steel with a microstructure of 50:50.

From the description, we can know A815 is the standard code, WP is grade, S31803 is the UNS code.

Because of it is the mixture of ferrite and austenite, so it has the characteristics of both. In most instances, duplex stainless steel is tougher than ferrite stainless steel. And in some cases, its strength even is twice of austenite. Duplex steels are also magnetic, which is much different from common austenite.

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.

So, the ASTM A815 WP-S Equal tee is a Seamless Wrought Ferritic/Austenitic Duplex Steel Pipe Fitting.

Seamless & Welded A815 UNS S31803 Duplex Steel Pipe Fittings.

ASTM A815 Duplex Steel UNS S31803 Buttweld Equal Tee

Equal Tee begins as cast material, then rolled to the shape after reheating. This process is wrought. Most Butt Weld Fittings is also wrought fittings. So, UNS S31803 Equal Tee is one type of ASME B16.9 Butt Weld Fittings.

Another reason for Butt Weld Equal Tee is the size. Only butt weld fittings can be 12 inch which is a quite large size. The largest size of Forged Fittings is 4 inch. And the schedule Sch 60 is usually to describe thickness of butt weld fittings.

By the way, wrought and forge has the same meaning in Chinese, but they are a little different. Forged steels are tougher than wrought steels, so Butt Weld Equal Tee is not very common used in high-tension applications.

As we all know, butt weld fittings have two categories: duplex steel Seamless and Welded Pipe fittings.

Seamless A815 Duplex Steel Pipe Fittings

Seamless A815 Duplex Steel Pipe Fittings.

According to ASTM A815, Class WP-S fittings should be manufactured from seamless product.

Seamless Pipe Fittings ordered as Class WP-S shall of seamless construction and shall meet all requirements of specification A960/ A960M, which are for Common Requirements of Wrought Steel Piping Fittings. The seamless construction makes the equal tee strong.

UNS S31803 Equal 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

UNS S31803 Tee Chemical Composition %

UNS S31803 Tee Mechanical Properties

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.

The post UNS S31803 Equal Tee A815 appeared first on Supplier of Quality Forged Fittings-Flanges.

Various pipe fittings which are ASME B16.11 Socket Weld Coupling, Threaded Elbow and ASME B16.9 Equal Tee were export to Malaysia.

A client from Malaysia was interested in the A182 F22 Coupling on our website, and found it was exactly what he needs, so he sent us an inquiry that include the Alloy Steel Pipe Coupling, Galvanized Equal Tee A234 WPB and SS304 Threaded Elbow. And highlight the delivery time is tight.

While the offer is sent to customer, we remark that Full Coupling and Equal Tee in stock. But equal tee need to be galvanized. 45 Degree Elbow can be ready while the tee finished of galvanizing in the email.

At the same time, we checked the shipping schedule for ETD and ETA.

Customer is happy with professional arrangement and confirmed the order in several days after negotiation.

Full Coupling, Equal Tee, 45 Degree Elbow Order

Pipe Fittings Manufacturer 

Pipe Fittings Manufacturer

Our pipe fittings not only have competitive price, but also have good quality. We manufacture them according to ASME B16.11 and ASME B16.9 standards and offer MTC to customer. ISO 9001 certificate is provided as customer’s require. Our professional QA/QC will not let any defective products into your hands, the pass rate of the products will be 100%.

ASME B16.11 Socket Weld Fittings have high leakage proof and low cost, its welding is also convenient. They are suitable for small diameter pipe.

ASME B16.9 Butt Weld Fittings provide an extensive size options and have good tolerance to high pressure condition and harsh environment.

ASME B16.11 Threaded Fittings is convenient assembly or disassembly, and Low production cost.

Above pipe fittings are available in stainless steel, carbon steel and alloy steel.

Socket Weld Coupling Dimensions

Socket Weld Coupling

Butt Weld Tee Dimensions

Galvanized Equal Tee

Threaded Elbow Dimensions

Threaded Elbow

Application of Pipes and Fittings

Our pipes and fittings are supplied for various projects as below

• Shipbuilding
• Transferring oil
• Transferring gas
• Metallurgical Refinery
• Sun Metals Solar Farm
• Power Plant Combined Cycle Addition
• Underground Rail Loop Station upgrades
• Water and Sewerage Capital Works Program

Quality Control of Pipe Fittings

For trust and long term cooperation, we have been strict in delivery, production and inspection. It has guaranteed the work efficiency, shorten the delivery time and ensured the quality, the pipe fittings are recorded from purchasing raw material to final goods.

The post Various Pipe Fittings Export to Malaysia Customer appeared first on Supplier of Quality Forged Fittings-Flanges.