• Corporate vision to become the pipeline industry Toyota
  • Corporate mission to enhance the quality level of Chinese manufacturing
  • Business goals domestic industry first

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Company Profile

Company Profile

Haihao Group is china steel pipe fitting & flange manufacturer.We produce many kinds of pipe fittings and flanges as per standard.Email:sales@haihaogroup.com

01why choose us
More Than 30 Years Experiences. Advanced Facility, Adequate capacity High Quality Piping Products. On Time Delivery For Shipments. Excellent &
02History
Haihao pipe fitting department is the steel pipe fitting division of Hebei Haihao High Pressure Flange Pipe Fitting Group Co.,Ltd, we manufacture ,supply and
03Vision
Our vision: Serving the world flowing! Aiming to be the best in the field! Improving level of \"Made in China\"!

Reference

ASME B36.19M STAINLESS STEEL PIPE

1 SCOPE This standard covers the standardization of dimensions of welded and seamless wrought stainless steel pipe for high or low temperatures and pressures. The word pipe is used, as distinguished from tube, to apply to tubular products of dimensions commonly used for pipeline and piping syste ...

ASME B36.10M 2004 Welded and Seamless Wrought Steel Pipe

SCOPE This Standard covers the standardization of dimensions of welded and seamless wrought steel pipe for high or low temperatures and pressures. The word pipe is used, as distinguished from tube, to apply to tubular products of dimensions commonly used for pipeline and piping systems. Pipe NPS ...

MSS SP-43 Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applica

1. SCOPE 1.1 This Standard Practice provides dimensions, tolerances, and markings for butt-welding fittings for low pressure, corrosion resistant applications. 1.2 This Standard Practice covers only fittings made for use with Schedule 5S or 10S pipe, for all NPS sizes listed in ASME B36.19M, exc ...

MSS SP-25 Marking System for Valves, Fittings, Flanges and Unions

1.1 This Marking system applies to valves, fittings, flanges and unions used in piping connections which include (but nare not limited to) flanged, soldered, brazed, threaded or welded joints. 1.2 These specified markings serve to identify the manufacturer, the rating designation,materials of co ...

MSS SP-75 -2004- Specification for High-Test,Wrought,Butt-Welding Fittings

SCOPE 1.1 This specification covers factory-made, seamless and electric fusion-welded carbon and low-alloy steel, butt-welding fittings for use in high pressure gas and oil transmission and distribution systems, including pipelines, compressor stations, metering and regulating stations, and main ...

ASME B16.49-2012-Factory-Made-Wrought-Steel-Buttwelding-Induction-Bends-for-Transportation-and-Distr

At the 1994 meeting of Subcommittee F, the project to develop a standard was accepted. Through the cooperation of producers and users familiar with the process, and with approval by the Standards Committee and ASME, ASME B16.49-2000 received approval as an American National Standard on April 25, ...

ASME/ANSI B16.28-Wrought-Steel-Butt-Welding-Short-Radius-Elbows-And-Returns

In 1959, recognizing the increasing use of short radius buttwelding fittings not covered by ASA B16.9-1958, MSS developed Standard Practice SP-59. In 1963, this Standard was submitted to Subcommittee 6 (now Subcommittee F), the B16 group responsible for welded fittings, for consideration as a ca ...

Certificate

Certificate

Three decades has been a sea-ho China elbow pipe of leading enterprises,