Butt-weld and forged pipe fittings
Butt-weld elbows, tees and reducers to B16.9; forged socket-weld and threaded fittings to B16.11.
Overview
Fittings join, turn, branch and reduce piping. Butt-weld fittings to ASME B16.9 match the pipe wall and are used on process and pipeline systems 2" and above; forged socket-weld and threaded fittings to ASME B16.11 in Class 3000, 6000 and 9000 cover small-bore lines.
AM Enterprises supplies both ranges from Dubai stock: 45° and 90° long- and short-radius elbows, equal and reducing tees, concentric and eccentric reducers, caps, stub ends, couplings, unions, bushings, plugs, swage nipples and olets. Materials match our pipe range, so a complete bill of materials can be supplied from one source with consistent certification.
Fittings are marked with heat number, grade and size, and shipped with EN 10204 3.1 certificates traceable to the raw material.
Typical applications
- Refinery and petrochemical process piping
- Pipeline bends, tees and reducers
- Steam and boiler piping (chrome-moly)
- Small-bore instrument and utility piping
- Fertilizer and chemical plant piping
- Water, fire-water and HVAC systems
Specified in refineries, oil & gas fields, fertilizer plants, petrochemicals.
Specifications
| Butt-weld (ASME B16.9) | Elbows 45° / 90° / 180° LR & SR · equal & reducing tees · concentric & eccentric reducers · caps · stub ends |
|---|---|
| Forged (ASME B16.11) | Socket weld & threaded elbows · tees · couplings · unions · bushings · plugs · swage nipples · Class 3000 / 6000 / 9000 |
| Branch fittings | Weldolets · sockolets · threadolets · elbolets · nipolets (MSS SP-97) |
| Sizes | ½" – 120" butt weld; ⅛" – 4" forged |
| Carbon steel | ASTM A234 WPB / WPC · A420 WPL6 · A105 · A350 LF2 |
| Alloy steel | ASTM A234 WP11 / WP22 / WP91 · A182 F11 / F22 |
| Stainless & duplex | ASTM A403 WP304/L · WP316/L · A182 F304 / F316 · A815 UNS S31803 / S32750 |
| Certification | EN 10204 3.1 · NACE MR0175 · PMI on request |
Sizes, classes and materials listed are typical of our stock and supply programme. Other combinations are quoted against your specification. See what is usually ex-stock.
Specifying the right fitting
Fittings follow the pipe: butt-weld fittings to ASME B16.9 for sizes above 2", forged socket-weld or threaded fittings to ASME B16.11 for 2" and below, in the material grade that matches the pipe. The common pairings are A234 WPB with A106/A53 carbon pipe, A234 WP11/WP22 with A335 chrome-moly, A403 WP304/WP316 with A312 stainless, A420 WPL6 with A333 low-temperature pipe, and A105, A182 F316 or A350 LF2 forgings for the small-bore range. Branch connections use weldolets, sockolets and threadolets to MSS SP-97 where a tee would be oversized.
Specify the wall thickness of butt-weld fittings to match the pipe schedule (the bevel is to ASME B16.25), the rating of forged fittings (Class 3000 and 6000 socket weld, 2000, 3000 and 6000 threaded), and the type and radius of elbows (long radius is standard; short radius for tight layouts). Seamless fittings are required by most refinery line classes; welded fittings to B16.9 are acceptable in larger sizes with 100 % radiography. Each fitting is marked with grade and heat number and ships with its EN 10204 3.1 certificate.
What to send us for a fast quote
- Fitting type and angle (elbow 90/45 LR/SR, tee, reducer conc/ecc, cap, olet)
- Size (and run × branch for reducing items)
- Standard: ASME B16.9 or B16.11; schedule or class
- Material grade
- Seamless or welded; NDT requirement
- Quantity and documents required
Why tenders get rejected, and how we avoid it
Fitting schedules are large and are rejected for small reasons: a WPB fitting quoted against a WPL6 line, a welded fitting where the line class says seamless, or no heat-number traceability. We quote each line against the specification, name the manufacturer per item and attach sample MTCs, with partial offers for the sizes in stock. More on API licences, authorisation letters and certificates.
Brands available
Supplied from the manufacturers below, through our sister company Al Hakim in Dubai. Country of origin is confirmed on the certificates of every supply.
Documentation supplied
EN 10204 3.1 material test certificate traceable to heat number, mill test certificate and dimensional report, certificate of origin and manufacturer's certificate of conformity, with NACE, fire-safe, 3.2 and third-party inspection documents where the order requires them. What every document in our package covers.
Frequently asked questions
Long radius or short radius elbow?
Long radius (1.5 × nominal diameter) is the default for process piping and gives lower pressure drop. Short radius (1 × D) is used only where space is restricted.
What class should forged fittings be?
Class 3000 for Sch 80 socket-weld or Sch 80 threaded pipe, Class 6000 for Sch 160, and Class 9000 for XXS pipe, so the fitting bore matches the pipe.
Can fittings and pipe be supplied from the same heat?
Not usually, but we supply matching grades and full 3.1 traceability for each item, which satisfies most project specifications.
Socket weld or threaded fittings?
Socket weld for process and hydrocarbon lines 2" and below: a stronger, leak-tight joint with no exposed threads. Threaded (NPT) for utility air, water and instrument piping where the line may be dismantled, and where the specification permits threads.
Long radius or short radius elbow?
Long radius (centre-to-end 1.5 × nominal diameter) is standard and gives lower pressure drop and erosion. Short radius (1.0 × diameter) only where space forces it and the specification allows.
Related products
Pair fittings with pipe, flanges, gaskets and bolting from the same line class; see the pipes and tubes, flanges, gaskets and stud bolts pages, or send the full MTO.
Pipes & tubes
Seamless and welded, carbon to super duplex, ⅛" to 120" NPS, with 3.1 certificates.
Sizes, classes and brands
Flanges
Weld neck, slip-on, blind, socket weld, threaded and lap joint, Class 150 to 2500, RF and RTJ.
Sizes, classes and brands
Forged steel valves
Forged gate, globe and check valves to API 602 in A105, LF2, F11/F22, F316 and F51, ¼" to 2".
Sizes, classes and brands
Stud bolts & fasteners
Stud bolts and heavy hex nuts: B7 / 2H, B7M, B8M, L7, plain, galvanized and PTFE coated.
Sizes, classes and brandsRequest a quotation for pipe fittings
Send size, class, material, quantity and required documents on WhatsApp or through the form. We reply within one working day with availability and lead time.