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HuaboPipe was founded in 2004, with the company in Wenzhou, the factory at No. 102 Longqing Road, Nanmingshan Subdistrict, Liandu District, Lishui, Zhejiang (Shuige Industrial Zone), and a warehouse in Longwan, Wenzhou. HuaboPipe manufactures butt-weld fittings and forged flanges; stainless steel pipe and valves are supplied to match the project. WhatsApp +86 15210578298, email lucas@hbpipe.com.
A concentric reducer keeps both pipe ends on one axis; an eccentric reducer offsets them. How to compare the two, when to use an eccentric reducer, which ASME B16.9 dimensions to check and how to choose a stainless steel grade.
ASME B31.3 is the process piping code. ASME B36.19 gives the outside diameters and 5S to 80S walls of stainless steel pipe. B31.3 lists B36.19, so the two work together.
HuaboPipe makes duplex 2205 and super duplex 2507 forged flanges to ASTM A182 F51, F60 and F53. Weld neck, slip-on, blind and lap joint types, with EN 10204 3.1 reports on request.
Huabo Pipe Industry Co., Ltd. (HuaboPipe) is a Wenzhou company with a fittings and flange factory in Lishui, China. Factory: No. 102 Longqing Road, Liandu. Standard sizes DN15 to DN1200; larger sizes are made to drawing, up to DN3000.
316L for mild chloride service; duplex 2205 for higher strength or higher chlorides; super duplex 2507 for seawater. HuaboPipe supplies all three to order. Lead time and MOQ confirmed on inquiry.
How ASTM pipe and tube specs differ, what A53, A106 and A312 cover, and why the A999 general requirements matter when you write a purchase order for steel pipe.
Why stainless steel pipe holds up in high-pressure lines. Strength, corrosion resistance and long-term stability help prevent micro-cracks and weld decay over the service life.
How NACE MR0175 / ISO 15156 applies to stainless fittings and flanges in sour service: SSC, hardness, 304L/316L/2205, RFQ items and 3.1 documents.
Stainless or carbon steel flanges? Stainless suits corrosive, wet or high-purity lines. Carbon steel costs less for water, air or oil service where corrosion is not the main concern.
Weld neck, slip-on, socket weld, threaded, lap joint and blind flanges. What each type is used for, and how to match one to the pressure, temperature and installation.
Penetrant testing uses a colored dye to show surface cracks and porosity that visual checks miss. It checks pipe welds for these defects at a lower cost than X-ray.
A flanged pipe uses bolted flanges, so a section can be opened for maintenance, repair or equipment replacement without cutting the line. That keeps shutdowns short.
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