Butt-Weld Fittings
& Forged Flanges
HuaboPipe started in Wenzhou in 2004. The factory is now in Lishui, Zhejiang. We make stainless steel butt-weld fittings and forged flanges. Fittings are cold formed, DN15 to DN3000, Sch10s to XXS. Stocked grades: 304/304L, 316/316L, 310S, 321, 2205, 2507. Non-standard parts are made to drawing.
Certificates
Shop Floor
Our Product Range
Butt-weld fittings, forged flanges and parts made to drawing.
Butt-Weld Fittings
Elbows, tees, reducers, caps • Cold press forming • ASME B16.9, EN 10253, DIN 2605
Forged Flanges
SO, WN, blind, lap joint • Class 150 to 2500 • ASME B16.5, EN 1092-1
Custom Fabrication
Non-standard per drawing • OEM/ODM for long-term projects
Seamless and welded stainless steel pipe available on inquiry.
Specifications
Material Grades
304/304L, 316/316L, 310S, 321, 2205, 2507
Size Range
DN15 to DN3000, Sch10s to XXS
Standards
Fittings: ASME B16.9, EN 10253, DIN, JIS, GB/T 12459 or customer drawing. Flanges: ASME B16.5, EN 1092-1.
Custom OEM
Non-standard parts are made to drawing. Surface finish and special shapes need a drawing or sample.
Drawing and sample reviewComplete Product Range
Stainless Steel Pipe
Seamless & welded • ASTM A312/A269 • DIN 17456/17458
Fittings
Elbows, tees, reducers, caps • Cold formed
Flanges
Forged • WN, SO, LWN, blind, lap joint • ASME B16.5 • EN 1092-1
Industries
Oil & Gas
Chemical Processing
LNG
Nuclear Power
Shipbuilding & Marine
Power Plant Boilers
Pulp & Paper
Water Treatment
Semiconductors
Chip Manufacturing
Inspection and documents
Traceability
Heat numbers trace to the mill test report.
Inspection
PMI inspection available. Dimensions and wall thickness are checked. PT, UT, RT and hydrotest per order.
Third-Party Inspection
Third-party inspection by SGS, BV or TÜV is accepted.
MTR Documentation
EN 10204 3.1 material test reports available on request
Surface treatment
Solution annealing, pickling, sand blasting and sand tumbling. Sand blasting and tumbling on request.
Certificates & Product Standards
Product standards are confirmed for each order. See our certificates for the issuing bodies, approved scope and validity dates.
Export
Exported to 60+ countries.
Lead time
Production is scheduled per order. Lead time is confirmed with the quote.
Non-standard parts
Made to drawing or sample.
Speed Up Your Quote
For a quotation, please include:
- • Standard (ASME B16.9/B16.5, DIN, EN, JIS, GB)
- • Material grade (304/304L/316/316L/2205/2507)
- • Size & Schedule (DN/NPS + SCH/wall thickness)
- • Quantity required
- • NDE/Testing (PT, UT, RT, or standard acceptance)
- • Delivery address (for freight calculation)
Send Us Your Inquiry
Send the specification or drawing for the parts you need. Read the buying guide first, then send material, standard, size, quantity, or a drawing. Price and lead time come after we confirm the request.