Standard name comparison table of various pipe fittings

National standard
GB12459

Steel butt welded seamless pipe fittings

GB/T13401

Steel plate butt welded pipe fittings

GB/T14383

Forged Steel Socket Weld Fittings

GB/T14626

Forged Steel Threaded Fittings

GB9112-9131

Steel pipe flanges, flange covers and gaskets for flanges

Sinopec Standard

SH3406

Petrochemical Steel Pipe Flanges

SH3408

Steel butt welded seamless pipe fittings

SH3409

Forged Steel Socket Weld Fittings

SH3410

Steel plate butt welded pipe fittings

chemical standard

HGJ514

Carbon steel, low alloy steel seamless butt welded pipe fittings

HGJ528

Steel butt welded pipe fittings

HGJ10

Forged Steel Socket Weld Fittings

HGJ529

Forged Steel Socket Weld, Threaded and Butt Welded Tube Heads

HGJ-44-76-91

Steel Pipe Flanges, Gaskets, Fasteners

HG20592-20635

Steel Pipe Flanges, Gaskets, Fasteners

PetroChina Standard

SY/T0510-1998

Steel Butt Welded Fittings

SY5257-91

steel elbow

Electricity Standard

GD87-1101

Typical Design Manual for Parts and Components of Steam-Water Pipelines in Thermal Power Plants

DL/T515

Power station elbow

American standard

ASME/ANSI B16.9

Factory Made Forged Steel Butt Weld Fittings

ASME/ANSI B16.11

Socket Weld and Threaded Forged Fittings

ASME/ANSI B16.28

Steel Butt Welded Small Radius Elbows and Backbends

ASME B16.5

Pipe Flanges and Flange Fittings

MSS SP-43

Forged stainless steel butt welded pipe fittings

MSS SP-83

Socket weld and threaded union

MSS SP-97

Integral Reinforced Sockets for Socket Weld, Threaded and Butt Weld Ends

Japanese standard

JIS B2311

General Steel Butt Weld Fittings

JIS B2312

Steel Butt Welded Fittings

JIS B2313

Steel plate butt welded pipe fittings

JIS B2316

Steel Socket Weld Fittings

LONGTAIDI is Largest manufacturer of piping in Northern China, with more than 15 years experience of manufacturing and exporting in the below category,

1. Steel fittings, flange (carbon steel, alloy steel, stainless steel)
2. Cladded(Weld-Overlay) pipe, fittings, flange & MLP (Mechanical Lined Pipes)
3. Pre-fabrication, piping spools etc.

LONGTAIDI is TOP 3 manufacturer for Cladded piping (welded-overlay) & MLP (Mechanical Lined Pipes, Patent Owned) from China.
The main markets are Oil and Gas, Petrochemical, Refinery, Power plants, LNG, FPSOs.

The registered capital of 20 Million USD, workshop area is 258, 000 Square meters, with 338 workers and engineers.

LONGTAIDI prides itself in its commitment to quality and integrity both in our products and attitude towards the client, supplier and all stakeholders in the group.

1.2. Reference market
GCC(UAE, OMAN, KUWAIT etc), CIS (Russia, Kazakhstan etc), North Africa (Algeria)
South America(Brazil, Argentina, Peru), EUROPE for contractors & end users (Italy, France, Spain, Netherlands etc)