Butt-Weld Fittings
& Forged Flanges
Huabo is a Wenzhou company with a factory in Lishui. We make butt-weld fittings and forged flanges, from DN15 to DN3000, in 304, 316L, 2205 and 2507. The applicable product standard and dimensions are confirmed with each inquiry. Non-standard parts are made to drawing. We reply within 24 hours.
Possessing International Mainstream Market Qualifications
Shop Floor
Our Product Range
Butt-weld fittings, forged flanges and parts made to drawing.
Butt-Weld Fittings
Elbows, tees, reducers, caps • Cold/heat forming • ASME B16.9, EN 10253, DIN 2605
Forged Flanges
SO, WN, blind, lap joint • Class 150–2500 • ASME B16.5, EN 1092-1
Custom Fabrication
Non-standard per drawing • OEM/ODM for long-term projects
Seamless & welded stainless steel pipes available on inquiry. Contact us for pipe schedules.
What Engineering Managers Look For
Critical specifications and capabilities that ensure project success
Material Grades
304/304L, 316/316L, Duplex 2205/2507
Material standardsSize Range
DN15–DN3000
Seamless & WeldedStandards
ASME, DIN, JIS, EN, GB
Multi-StandardCustom 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 Pipes
Seamless & welded • ASTM A312/A269 • DIN 17456/17458
Fittings
Elbows, tees, reducers, caps • Cold/heat forming • Precision machined
Flanges
Forged & plate • ASME B16.5 • EN 1092-1 • Patented anti-leakage designs
Industry Applications - Engineered for Demanding Environments
Trusted by global infrastructure and industrial projects
Oil & Gas
High-pressure extraction & transport.
Chemical Processing
Corrosion resistance in harsh media.
LNG
Cryogenic material stability.
Nuclear Power
Zero-defect high safety standards.
Shipbuilding & Marine
Saltwater corrosion protection (DNV).
Power Plant Boilers
Heat & pressure resistance.
Pulp & Paper
Handling corrosive pulping chemicals.
Water Treatment
Sanitary grade municipal systems.
Semiconductors
Ultra-high purity (UHP) piping.
Chip Manufacturing
Precision fluid control for cleanrooms.
Built on Trust & Precision
22 years of manufacturing excellence for global infrastructure projects
Quality You Can Verify
Full Material Traceability
ASTM/EN compliant raw materials with chemical & mechanical testing from melt to delivery
Rigorous Testing
Dimension tolerance, pressure testing, non-destructive testing (PT/UT/RT)
Third-Party Inspection
SGS, BV, TUV audits supported for your peace of mind
MTR Documentation
Material Test Reports included with every shipment
Certificates & Product Standards
Product standards are confirmed for each order. See our certificates for the issuing bodies, approved scope and validity dates.
Global Export
Serving customers in US, EU, Japan, Southeast Asia, and Africa
On-Time Delivery
Flexible schedules for large-volume orders and long-term projects
Expert Team
Professional engineers providing drawing support and technical consultation
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. We reply within 24 hours. Price and lead time come after we confirm the request.