Working with strategic partners and professional engineer team, Leesh supplies series of large size welded and seamless fittings,including elbow, tee, reducer, bend, cap, flange, forged fittings, pipe tube, coil, valves and other fluid industry parts in accordance with different GB, ANSI, DIN, BS, JIS standards to global market.
Leesh's mission
Create sustainable success through professional engineering and forward thinking with a clear focus on continuous improvement and operational effectiveness while exceeding commitments to customers in delivery, reliability and support.
All parts send through Leesh, all checked through proved SOP and professional inspection method. All our purpose to provide different experience for your sourcing.
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Products Classification |
Elbow，Tee，Reducer，Cap |
| Size | 1/2″-120″ |
| Material Grade |
A860 WPHY42 - WPHY46 - WPHY52 - WPHY60 - WPHY65 - WPHY70 - WPHY80 L245NB - L290NB - L360NB - 415NB - L360QB - L415QB - L450QB - L485QB - L555QB - P355NH - P460QL1 |
| SCH | 10 - 160 |
| Manufacturing Standards | ASME B16.9 MSS SP-75 EN10253-2 GB/T 12459 SH/T 3408 |
| Provide customized services |
Pipeline Steel
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Products Classification |
Elbow，Tee，Reducer，cap，Lap Joint Stub End |
| Size | SS pipe fittings: 1/2″-76″ Lap Joint Stub End: 1/2″-48″ Ferrite or Austenite stainless steel Pipe fittings: 1/2″-48″ |
| Material Grade |
· A403 WP304/304L/304H - WP316/316L/316H - WP321/321H · Equivalent grades of EN 10253-3 - EN 10253-4 · A815 S31803 - S32750 |
| SCH | SCH5S-SCH160 |
| Manufacturing Standards | ASME B16.9 MSS SP-43 EN10253-4 GB/T 12459 SH/T 3408 |
| Provide customized services |
Stainless Steel，Ferrite or Austenite stainless steel
| Products Classification | Elbow, Tee, Reducer, Cap |
| Size | 1/2″-120″ |
| Material Grade |
· A234 WPB - WPC · A420 WPL6 - WPL3 · P235GH - P265GH - P265NL1 · A234 WP1 - WP11 - WP12 - WP5 - WP22 - WP9 - WP91 · 16Mo3 - 10CrMo9-10 - 13CrMo4-5 - X10CrMoVNb9-1 |
| SCH | 10-160 |
| Manufacturing Standards | ASME B16.9 EN10253-2 GB/T 12459 SH/T 3408 |
| Provide customized services |
Carbon Steel, Low Temperature Steel, Alloy Steel
Bends
| Material Grade | API 5L PSL1 & PLS2, Alloy Steel, Stainless Steel |
| Bend Radius R | Typical 3D, 4D, 5D, 6D, 7D, 8D, 9D, 10D ...... |
| Bend Angle θ | Typical 15°, 30°, 45°, 60°, 90° ...... |
| Tangent Length L | Prefered D ≤ 508mm, L > 250mm ; or D > 508mm, L > 500mm |
| OD | According Requirements |
| SCH | 10, 20, 30, 40, 60, 80, etc. |
| Bevel End Type | ASME B16.25 |
| Tolerances Standard | |
| Bend Radius | ±1% |
| Bend Angle | ±0.5° |
| Bend Plane | ±1° |
| End Squareness | D ≤ 914, ±2.4mm; D > 914, ±3mm |
| Linear Dimensions | D ≤ 610, ±5mm; D > 610, ±6mm |
| Wall Thickness | Tmin ≥ 90% of the nominal mating wall thickness or specified minimum wall thickness |
| Ovality | (Dmax-Dmin) ≤ 3% of the nominal mating pipe outside diamter within the bend; (Dmax-Dmin)≤ 1% at the welding end |
| OD | ≤ 1% of the nominal mating pipe outside diameter |
| ID | Welding Ends：D ≤ 914, ±2.5mm; D > 914, ±3mm |
| Body：> 97% of the minimum specified matching pipe internal diameter at any location in the bend | |
Copper & Nickel Alloy Steel Buttweld Fittings
| Products Classification | Elbow, Tee, Reducer, Cap |
| Size |
Nickel Alloy Steel Fittings: 1/2″-16″ Copper Alloy Steel Fittings: 1″-20″ |
| Material Grade |
· B366 NO4400 - NO6600 - NO6625 - N08800 - N08810 - N08825 · B466 UNS C70600 (CuNi 90/10) - UNS C71500 (CuNi 70/30) |
| Wall Thickness |
Nickel Alloy Steel Fittings: SCH5S-SCH80 Copper Alloy Steel Fittings: 2.5mm-8.5mm |
| Manufacturing Standards |
ASME B16.9 EEMUA 146 |
| Provide customized services |
Forged Fittings
-Carbon Steel, Line Pipe Steel, Alloy Steel, Stainless Steel, Ferritic/Austenitic Stainless Steel etc
| Products Classification | Elbow, Tee, Cap, Coupling, Boss, Swaged Nipple, Plug |
| Size | 1/2″-4″ |
| Material Grade |
· A105 · A182 F11 - F22 - F91 - F304L - F316L - F321 - F51 - F53 · A350 LFI - LF2 · A694 F52 - F60 - F65 - F70 |
| Class | 3000LB-9000LB |
| Manufacturing Standards | ASME B16.11 MSS SP-97 MSS SP-95 |
Flanges
-Carbon Steel, Line Pipe Steel, Alloy Steel, Stainless Steel, Ferrite or Austenitic Stainless Steel
| Flange Type | Size | Class |
| ANSI Slip-On | 1/2"-24" | 150#-2500# |
| ANSI W/D Neck | 1/2"-24" | 150#-2500# |
| ANSI S/W | 1/2"-24" | 150#-2500# |
| ANSI THR’D | 1/2"-24" | 150#-2500# |
| ANSI Lap Joint | 1/2"-24" | 150#-2500# |
| ANSI Ring Joint | 1/2"-24" | 150#-2500# |
| Long W/D Neck | 1/2"-24" | |
| Orifice Flange | 1/2"-24" | 300#-2500# |
| MSS Flange | 12"-60" | 150#-900# |
| API Flange | 26"-60" | 75#,150#,300# |
| API 6B Flange | 2-1/16"~21-1/4" | 2000#-5000# |
| API 6BX Flange | 26-3/4"~30" | 2000#-3000# |
| API 6BX Flange | 1-13/16"~21-1/9" | 5000#-10000# |
| API 6BX Flange | 1-13/16"~18-3/4" | 15000# |
| API 6BX Flange | 1-13/16"~13-5/8" | 20000# |
| AWWA Slip-On | 4"-120" | Class B&D |
| AWWA Blind | 4"-120" | Class E |
| DIN W/D Neck | 6 Bar-40 Bar | |
| DIN Slip-On | 6 Bar-40 Bar | |
| DIN Blind | 6 Bar-40 Bar | |
| KS&JIS Flange | 2Kg/cm2-21Kg/cm2 | |
| Spectacle Spacer&Blanks | 1"-36" | 150LB-900LB |
| Spectacle Flange RF&FF | 1/3"-10" | 150LB,300LB |
| EN Flange | 3/8"-48" | PN 2.5-PN400 |
| Material Grade |
· A105 · A350 LFI - LF2 · A182 F11 - F12 - F22 - F91 · A694 F52 - F60 - F65 - F70 · A182 F304 - F304L - F316 - F316L - F321 - F347H - F51 - F53 · 1.4571 - 1.4301 - 1.4541 - 1.4306 - 1.4404 - 1.4435 |
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| Manufacturing Standards | ANSI B16.5 ANSI B16.47 EN1092-1 DIN | |
100% tested before delivery
1. Dimension test
2. Visual inspection
3. NDT test (PT/MT/UT/RT 100%)
4. Material inspection
(PMI/chemical composition analysis/mechanical property analysis )
Seamless Pipe Fittings Process
Stainless Steel Pipe Fittings Process
Welding Pipe Fittings Process
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