Stainless Steel Pipeline Fittings & Materials Manufacturer China

KIDY EXCELS IN MANUFACTURING STEEL PIPELINES

KIDY produce pipeline materials such as seamless tubes, pipes, butt welding fitting, flanges and valves. Meanwhile, we manufacture other related products for the full pipeline package to serve our clients, like camlock, FTFE teflon, bolt nut, gasket. All our raw materials are bought from Stingshan steel factory which is the biggest stainless steel factory in China. We supply small OD seamless pipe from 1/8inch to big OD 24inch, ERW pipe from small size OD 21.3mm to big size OD 900mm. Very thin thickness our factory also can do for precision seamless tube, specially for the medical treatment. Most important is we have advantage for the special materials grade that can make of valves, pipes and fitting. Our delivery time is short and is allowed third party inspection for the quality control.

> ASTM A312-312M Cold Worked Austenitic Seemless Stainless Steel Pipes > ASTM A213-213M Cold Worked Austenitic Seemless Stainless Steel Pipes > ASTM A790-790M Cold Worked Dual Phase Steel And Super Dual Phase Steel Seamless Pipes > ASTM A511/A511M Seamless Mechanical Engineering Pipes and Hollow Bars for Stainless Steel and Duplex Steel > ASTM A376/A376M Austenitic Seamless Steel Pipes for Use at High Temperatures > BS EN 10216-5 Seamless Steel Pipes for Pressure Purposes > DIN 17456-Seamless Round Pipes Made of Stainless Steel More +

Seamless Steel Pipe

ASTM A312-312M Cold Worked Austenitic Seemless Stainless Steel Pipes ASTM A213-213M Cold Worked Austenitic Seemless Stainless Steel Pipes ASTM A790-790M Cold Worked Dual Phase Steel And Super Dual Phase Steel Seamless Pipes ASTM A511/A511M Seamless Mechanical Engineering Pipes and Hollow Bars for Stainless Steel and Duplex Steel ASTM A376/A376M Austenitic Seamless Steel Pipes for Use at High Temperatures BS EN 10216-5 Seamless Steel Pipes for Pressure Purposes DIN 17456-Seamless Round Pipes Made of Stainless Steel ГОСТ 5632/ГОСТ 9941 Cold Worked Austenitic Duplex Steel Seamless Stainless Steel Pipes JIS G3459 Industrial Piping Austenitic Stainless Steel Pipes

> ASTM A312-312M Austenitic Stainless Steel Welded Pipes > ASTM A790-790M Dual Phase Steel and Super Dual Phase Steel Welded Pipe > ASTM A789-789M Universal Welded Ferrite/Austenitic Dual Phase Steel Welded Pipe > BS EN 10217-7 Stainless Steel Welded Pipes for Pressure Purposes > JIS G3459 Industrial Piping Austenitic Stainless Steel Welded Pipes

Welded Steel Pipe

ASTM A312-312M Austenitic Stainless Steel Welded Pipes ASTM A790-790M Dual Phase Steel and Super Dual Phase Steel Welded Pipe ASTM A789-789M Universal Welded Ferrite/Austenitic Dual Phase Steel Welded Pipe BS EN 10217-7 Stainless Steel Welded Pipes for Pressure Purposes JIS G3459 Industrial Piping Austenitic Stainless Steel Welded Pipes

> ASTM A269-269M Precision Stainless Steel Seamless Pipe > JIS G3463 Stainless Steel Pipes for Boilers and Heat Exchangers > Stainless Steel Hydraulic Tube > Heat Exchanger Tubes > Stainless Steel Medical Tube > Stainless Steel Capillary Tube > Special Custom Stainless Steel Tube More +

Steel Tube

ASTM A269-269M Precision Stainless Steel Seamless Pipe JIS G3463 Stainless Steel Pipes for Boilers and Heat Exchangers Stainless Steel Hydraulic Tube Heat Exchanger Tubes Stainless Steel Medical Tube Stainless Steel Capillary Tube Special Custom Stainless Steel Tube Precision Stainless Steel Tube

> ASTM A182 ASME B16.5 Pipe Flanges and Flanged Fittings > ASTM A182/A240 ASME B16.47 Large Diameter Steel Flanges > ASTM A182/A240 ASME B16.48 Line Blanks > BS EN 1092-1 Flanges and Their Joints—Circular Flanges for Pipes > ISO7005-1 Flanges and Their Joints—Circular Flanges for Pipes > AS 2129 Flanges for Pipes Valves and Fittings > AS 4087 Flanges for Pipes Valves and Fittings More +

Steel Pipe Flange

ASTM A182 ASME B16.5 Pipe Flanges and Flanged Fittings ASTM A182/A240 ASME B16.47 Large Diameter Steel Flanges ASTM A182/A240 ASME B16.48 Line Blanks BS EN 1092-1 Flanges and Their Joints—Circular Flanges for Pipes ISO7005-1 Flanges and Their Joints—Circular Flanges for Pipes AS 2129 Flanges for Pipes Valves and Fittings AS 4087 Flanges for Pipes Valves and Fittings DIN 2527/DIN2631 Pipe Flanges and Flange Fittings JIS B2220 Steel Pipe Flanges Stainless Steel Flanges GOST 12821-80; GOST 12820-80 Flanges Stainless Steel Flanges BS4504 Flanges Stainless Steel Flanges SABS 1123/SANS 1123 Flanges Stainless Steel Flanges ANSI/AWWA C207-07 JIS Standard Flange Steel Forged Rings Steel Blind Flanges Spectacle Blind Flanges In Piping Stainless Steel WNRF Weld Neck Flanges Stainless Steel Socket Weld Pipe Flanges Stainless Steel Threaded Pipe Flanges Stainless Steel Lap Joint Pipe Flanges Long Weld Neck Flanges Special Custom Pipe Flanges

> High Pressure Forged Pipe Fittings > Medium Pressure Stamped Pipe Fittings > Low Pressure Cast Pipe Fittings > Quick Fitting Connector

Stainless Steel Pipe Fittings

High Pressure Forged Pipe Fittings Medium Pressure Stamped Pipe Fittings Low Pressure Cast Pipe Fittings Quick Fitting Connector

> Steel Flanged Valve > Screwed End Valve

Steel Valve

Steel Flanged Valve Screwed End Valve

Our Company

About KIDY

KIDY is mainly in export jobs which is under Zhe Jiang Kindly Pipe Fitting Co., Ltd. The group includes Kanglong pipe, Kanglong hardware, and Kindly pipe fitting factories. Kindly pipe fitting proof by TUV certificate, a Quality management system certificate, an Environmental management system certificate, an Occupational health safety management system certificate, a Production license of special equipment People's Republic of China, and an ISO certificate.

About Us

KIDY's Pipeline Material Are Popularly Sold All Over The World

KIDY Pipeline not only produces products but also takes charge of welding, maintenance, and installation. Our products are used by Arab American oil company Aramco in Saidi and Russian gas pipelines.

Super Austenitic Steel

Incoloy

Hastelloy

CuNi Alloy

Inconel

Monel Alloy

Titanium

Nimonic Superalloys

HP Stainless Steel

High-temperature Alloys

Super Austenitic Steel

Incoloy

Hastelloy

CuNi Alloy

Inconel

Monel Alloy

Titanium

Nimonic Superalloys

HP Stainless Steel

High-temperature Alloys

Factory Show

Workshop

Finished Products

Inspection Equipment

Physical And Chemical Lab

Equipment Workshop

KIDY News Center

Heat Treatment of Austenitic and Duplex Seamless Pipe: What Buyers Need to Verify

Heat treatment is a critical manufacturing stage for austenitic and duplex seamless stainless steel pipe. It can influence microstructure, corrosion behavior, mechanical properties, dimensional condit...

Aug

2026

Pickling and Passivation of Seamless Stainless Steel Pipe: Buyer Specifications

The corrosion resistance of stainless steel depends not only on its grade and chemical composition but also on the condition of its surface. Heat tint, oxide scale, embedded carbon-steel particles, sh...

Aug

2026

Schedule 10S, 40S and 80S Seamless Stainless Pipe: How Buyers Should Choose

Schedule 10S, 40S and 80S identify standardized nominal wall thicknesses for stainless steel pipe. For the same NPS, the outside diameter normally remains constant while the wall thickness and inside ...

Aug

2026

KIDY-Leading Piping Materials Manufacturer in China

Feel free to inquire KIDY any questions about steel piping materials.

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