We offer a complete range of butt weld elbow, tee, reducer, bend, cap, cross and stub end, which are available in various size, specification, thickness and shapes for meeting customer’s requirements.

Duplex Steel are known by it’s highly corrosion resistance properties with respect to the standard austenitic grades or high alloyed ferrite.

What is the Duplex Steel Grades?

ASTM A815 UNS S31803 Buttweld Fittings

People described 31803 as a duplex stainless steel with a microstructure of 50:50 austenite and ferrite. The steel combines good mechanical strength (typically up to over 480 MPa yield strength) and ductility with moderate to good corrosion resistance in a variety of environments.

ASTM A815 UNS S32205 Buttweld Fittings

2205 is a duplex stainless steel, with a chemical composition of nearly equal proportions of austenite and ferrite.  This combination allows the alloy to be stronger and tougher than standard austenitic steels.

Type of Duplex Steel Buttweld Fittings

Duplex Steel Buttweld Fittings

Specification for Duplex Steel Pipe Fittings

Standard: ANSI/ASME B16.9, B16.28, MSS-SP-43

Specification: ASTM / ASME A815 / SA815

Size: NPS 1/2″ to 48″

Thickness: Sch 10S to Sch XXS

Type: Seamless & Welded Buttweld Fittings

Schedule 40S Pipe Fittings Weight Chart

The common equal size butt weld fittings are 90 degree elbow, 45 degree elbow and equal tee. Due to the size range, the weight and volume is very important for calculating the transportation cost.

Equal Pipe Fittings Weight Chart

The unequal pipe fittings also called reducing fittings, these are concentric reducer, eccentric reducer & reducing tee, now we provide the weight chart as following. For more dimensions & weight, please contact us.

Reducing Fittings Weight Chart

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Reducing fittings for pipes are including the elbows, reducers, couplings, tees, socket inserts, swage nipple and bushings. Usually taking the larger size as running pipe and smaller size as branch pipe.

Hex Head Bushing Dimensions

Hex Head Bushing Dimensions

Size: DN 6 to 100 / NPS 1/8″ to 4″

Standard: GB/T14626, ANSI B16.11, BS3799

Thread Type: NPT, PT, PF, BSPP, BSPT

How to Guarantee the Quality of Reducing Bushing?

1. Choose original material from trust and famous steel mill.
2. Manufacturing bushing according to ASME B16.11
3. Measuring the dimensions according to above chart.
4. Check the thread of hex head reducing bushing.
5. Test the properties of super duplex stainless steel bushing.

Bushing Weight Chart

Usually sending threaded bushings to client by courier or air, because the size is small and weight is light. Now we will provide the weight chart to help you check the air cost.

Package for Hex Head Reducing Bushing

Surface the anti-rust oil after done the marking.

Put hex head bushings into plastic bag one by one, then cartons.

Pack the cartons in wooden cases.

Stick list on cartons and wooden cases for easy recognition.

What is Material Grades of Duplex Steel Forged Fittings?

Alloy Steel Forged Fittings

ASTM A182 F1, F5, F9, F11, F12, F22, F91

Carbon Steel Socket Weld Fittings

ASTM A105, A694 F52, F60, F65, F70, A350 LF2, LF3

Duplex Steel Hex Head Bushing

ASTM A182 F51, F53, F55, S 31803, 32205, 32550, 32750, 32760, 32950

Stainless Steel Threaded Fittings

ASTM A182 F304/304L/304H, F316/316L, F310, F317, F321, F319, F347

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Socket Weld Fittings also cover  90 degree elbow, 45 degree elbow, tee, cross, union, cap, lateral. Duplex stainless steel pipe fittings is our hot sale product, especially Class 3000 Stainless Steel Socket Weld Fittings in material grade 304 & 316.

They are used for their good mechanical properties in the as-cast (and therefore as-welded condition) and their excellent corrosion resistance properties (particularly to stress corrosion cracking).

Socket Weld Coupling Dimensions

Socket Weld Coupling Dimensions

Material & Grades for Full Coupling

Stainless Steel Full Coupling

ASTM A182 F304/304L/304H, F309S/309H, F310S, F316/316L, F317, F321, F347

Alloy Steel Full Coupling

ASTM A182 F1, F5, F9, F11, F12, F22, F91

Carbon Steel Forged Coupling

ASTM A105, A694 F52, F60, F65, F70, A350 LF2, LF3

Duplex Steel Forged Coupling

ASTM A182 F51, F53, F55, F50, F57, F59, F60, F61

RFQ of Class 3000 Pipe Fittings

What is your package?

Cartons and Wooden Cases.

How to against rust during the shipment?

Surfaced anti-rust oil on the body of coupling before shipping.

B16.11 Full Coupling Weight Chart

The weight of coupling is available in both socket weld and threaded. The size is from NPS 1/8″ to 4″ and pressure ratings cover Class 3000# and 6000#. So we can call them as high pressure pipe fittings.

Inspection of Steel Pipe Coupling

1. Visual the surface
2. Measure the dimensions.
3. Check the marking.
4. Test the properties.

Export Country for Forged Steel Fittings

Asia: Vietnam, Singapore, India, Indonesia, Malaysia, Thailand, Kazakhstan

Africa: Nigeria, Madagascar,Ghana, Kenya, Angola, Mauritius, Uganda

Middle East: Saudi Arabia, Qatar, Israel, Egypt, Oman, Jordan

Latin America: Uruguay, Peru, Chile, Brasil, Ecuador, Colombia

Oceania: Papua New Guinea, Australia, New Zealand, Solomon

Europe: Greece, UK, Poland, Ukraine, France, Spain, Italy, Ukraine

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We export butt weld fitting for petroleum, chemical, water supply system and fabrication industry.

BW Equal Tee Dimensions

Standard: ASME B 16.9, ASME B36.19

Size Range: 3/4″ to 48″ / DN20 to DN1200

Thickness: Sch 10s, 20, STD, 40, 80, 100, 120, 140, 160, XXS

Form: Seamless or Welded

Surface: Pickling and Solution Heat Treatment.

Material Grades of ASME B16.9 Buttweld Fittings

Stainless Steel BW Equal Tee

ASTM A403 WP304/304L, WP316/316L, WP321, WP317, WP310, WP309

Duplex Steel Butt Weld Tee

ASTM A815 UNS S 31803, S 32205, S 32550, S 32750, S 32760

Carbon Steel Equal Tee

ASTM A234 WPB, A420 WPL3, WPL6, WPL9, WPHY42, 52, 60, 65, 70.

Alloy Steel Butt Weld Equal Tee

ASTM A234 WP1, WP5, WP9, WP11, WP12, WP22, WP91

Butt Weld Pipe Fittings Dimensions

304 Stainless Steel (SCH 40) BW Equal Tee

Chemical Composition

Mechanical Property

Duplex Stainless Steel Fittings

Package 

Butt Weld Tees Package

We marked all ASME B16.9 Buttweld Fittings with Type, Grade, Lot No, Size, Standard and Thickness. Our workers packed ASTM A815 WP-S UNS S31803 BW Equal Tee into wooden pallets or cases. We use anti-rust oil and plastic bag to protect duplex steel fittings to against rust during shipping.

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. Great care is taken during operation and transportation.

Inspection 

Visual the surface of buttweld Tee body.

Check the marking ” 12″ SCH60 TEE EQUAL ASTM A815 UNS S31803 ASME B16.9 Z188″

Measure outside diameter, wall thickness, center to end and end to end.

Test the chemical properties of duplex stainless steel buttweld equal tee.

Duplex Stainless Steel Features

• High strength
• High ductility
• Outstanding corrosion-resistant

UNS S31803 Temperature Range

Duplex Stainless Steel UNS S31803 Fitting also known as duplex 2205 fitting. Its temperature range typically is -50° to 300° C (-58° to 572° F); outside of this range, its performance characteristics degrade.

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Duplex Stainless Steel ASTM A182 F51 Weldolet, 12 x 3 inch Sockolet, Schedule 80 Pipe Fittings and MSS SP 97 Olet with full specification in abundant stock.

It is a duplex stainless steel reinforced branch connection fittings. It is more safe and reliable than traditional branch connect fittings such as reducing tee.

Zizi produces outlet fittings for more than 10 years and exports weldolets to Southeast Asia, Africa, Latin America and Oceania. With rich production and sale experience, we supply the best products and service for client.

Weldolet Dimensions MSS SP 97

Standard: MSS-SP-97

Run Pipes diameter range: DN8– 300 / NPS1/4 – 36

Branch diameter range: DN6-100/ NPS 1/8-4

Pressure rate: STD/Sch 40, XS/ Sch80, Sch 160

What is Material for Forged Steel Weldolet

Duplex Steel

ASTM A182 F51, F53, F55, F56, F57

Carbon Steel 

ASTM A105, A694 F52, F60, F65, F70, A350 LF2, LF3

Stainless Steel 

ASTM A182 F304/304L/304H, F316/316L, F310, F317, F309

Alloy Steel 

ASTM A182 F1, F5, F9, F11, F12, F22, F91

What is a Duplex Steel Weldolet Used For

• Provide 90 degree branch connection.
• Larger size outlet for the run pipe, smaller size outlet for the branch.
• Welded onto the outlet pipes. The ends are beveled.
• Designed to provide integral reinforcement with minimize stress concentration

ASTM A182 F51 Weldolet

Package of Forged Steel Olets

We marked all duplex stainless steel weldolets with Grade, Lot No, Size, Standard and Schedule Thickness. And do pickling and solution heat treatment on 4 x 3 inch ASTM A182 F51 Weldolet . The workers sleeved forged steel fittings into plastic bag individually, packed them in carton and wooden cases, then bundled package with nylon rope.

Inspection of Duplex Steel Weldolet

Visual the surface of duplex steel weldolet body. Such as dents, die marks, porosity, undercuts.

Check the marking. Such as type, size, material, grade, thickness, heat No.

Measure dimensions. Such as large end diameter, small end diameter, wall thickness and height.

Test the chemical composition of duplex stainless steel pipe fittings.

Duplex Steel Buttweld Fittings Features

Better Strength

Strong Joint

Large Apply Fields

Extensive Supply Range

Excellent Corrosion Resistance

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Quality leading manufacturer Zizi offers super duplex stainless steel butt weld fittings for Singapore. Seamless ppe fittings are available in a variety sizes and plays a important role in the piping system.

ASTM A815 Duplex Butt Weld Fittings are widely used diverse industries. Fittings and Flanges of S 31803 are made available on request of customers.

Duplex A815 UNS S31803 Elbow Fittings Dimensions

Duplex UNS S31803 Elbow Fittings Dimensions

Standard: ASME/ANSI B16.9

Size: 1/8″ to 24″

Thickness: Sch 10s, 20, STD, 40S, XS, 80S, 120, 160

Technical: Seamless and Weld Elbow

Surface: Pickling and Solution Heat Treatment.

Material Grades: UNS S 31803, S 32205, S 32550, S 32750, S 32760

What are Similar Grades to UNS S31803 Fittings

2205

EN 1.4462Z

UNS S31803

UNS S32205

BS 318S13

318

How Many Types of Steel Pipe Elbow?

• Angle

45 Degree Elbow, 90 Degree Elbow, 180 Degree Elbow.

• Shape

Straight Elbow and Reducing Elbow.

• Radius

Long Radius Elbow and Short Radius Elbow.

• Connection

Butt Weld Elbow, Socket Weld Elbow, Threaded Elbow.

Schedule 40 Elbow Weight in kg

How to Calculate Weight of 90 Degree Elbow

Calculation Formula : W=0.0387 * S( D – S ) * R / 1000

• W = Weight (kg/piece).
• S = Thickness in mm.
• D = Nominal Diameter in mm.
• R = Radius

For example” 90 Degree Elbow SR 10″ x 10mm Thickness BW ASTM A403 WP316 ASME B16.9″

From above information, we can know OD is 10″ which is 273mm. SR means 1D that is 1 x 273mm. Thickness is 10mm. Let’s take these data into formula.

0.0387 x 10 x (273 – 10) x 1 x 273 / 1000 = 27.8kg/pcs.

Duplex Steel Buttweld Fittings

Package

We marked Duplex Steel Buttweld Fittings with Grade, Heat No, Size, Standard and Thickness. Our workers wrapped ASTM A815 UNS S31803 Elbow with water-proof material, and put them into wooden case or pallets, then bundled packages with nylon rope.

Clear labels are tagged on the outside of the package for easy identification of the quantity and product I.D. great care is taken during operation and transportation.

Inspection

1. Visual the surface of duplex stainless steel elbow fittings.
2. Check the marking. Such as size, material code, grade, thickness, heat No.
3. Measure the diameter and thickness whether in tolerance.
4. Test the chemical properties of ASTM A815 UNS S31803 Pipe Fittings.

Features

Duplex stainless steels are considered resistant to stress corrosion cracking, they are not as resistant to this form of attack as ferritic stainless steels. However, the corrosion resistance of the least resistant duplex stainless steels is much better than most commonly used grades of stainless steels 304 and 316.

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