High Pressure Annealed Pipe Seamless DIN2391C ST52.4 NBK Phosphating Cold Drawn DNV GL

High Pressure Seamless Boiler tube DIN2391C ST52.4 NBK + Phosphating Precision Cold Drawn DNV.GL Approved

DIN2391 Precision Cold Drawn Seamless Pipes and Tubes, Gr St35 St45 St52 St37.4, Cold Finished Seamless Pipe use for Hydraulic and Pneumatic.

Delivery Status: NBK (+N) BKW (+LC) GBK (+A) BKS (+SR) BK (+C) OD x WT = 4~120 x 0.5~15mm

DIN2391 St52.4+N Phosphated Hydraulic Tube

Normalized NBK

The last cold forming process is followed by annealing above the upper transformation point in a controlled

atmosphere.

Chemical Composition:

Steel grade		Chemical composition, as a percentage by mass
Symbol	Material number	C max.	Si max.	Mn	P max.	S max.
St 30 Si	1.0211	0.10	0.30	<=0.55	0.025	0.025
St 30 Al	1.0212	0.10	0.05	<=0.55	0.025	0.025
St 35	1.0308	0.17	0.35	<=0.40	0.025	0.025
St 45	1.0408	0.21	0.35	<=0.40	0.025	0.025
St 52	1.0580	0.22	0.55	<=1.60	0.025	0.025
The following alloying elements may be added: Nb: <=0,03%; Ti: <=0,03%; V: <=0,05%; Nb + Ti + V: <=0,05%.

Steel grade		Chemical Composition(%):
Steel name	Steel number	C max	Si max	Mn	P max	S max	Al min
E215	1.0212	0.10	0.05	0.70	0.025	0.025	0.025
E235	1.0308	0.17	0.35	1.20	0.025	0.025	-
E355	1.0580	0.22	0.55	1.60	0.025	0.025	-

Certification

Zhangjiagang Hua Dong Energy Technology Co., Ltd. is a high-tech enterprise specialized in producing all kinds of stainless, carbon and alloy steel tubes and pipes, steel plates which are widely used in the field of boiler&heat exchanger, energy, petrochemical, mining, food, paper, gas and fluid industry. And we have passed the attestations including ASME, TUV, Grade A, ISO9001, EN12952, EN10216, SO3834.

The company is the subsidiary of Zhangjiagang Hua Dong Boiler Co., Ltd, which is the most leading boiler and boiler parts manufacturer in China with a history of 35 years and annual turnover of 110 million U.S.A. dollars. Our products have been exported to over 30 countries like United States, Australia, Vietnam, Pakistan, Albania, Cambodia, India, Indonesia, South Korea, the Philippines, Turkey, Saudi Arab, Germany, Russia, Chile, Syria, Thailand, Bangladesh, France, Algeria, Mongolia and Singapore, Cuba, Iraq, Italy, Spain, Japan, Yugoslavia, Sri Lanka, the Czech republic, kyrgyzstan, Canada, Malaysia, the United Kingdom and so on.

Location:

Our company locates in Zhangjiagang city which is a port city, and is only 120km far away from Shanghai, 60km far away from Suzhou and 60km far away from Wuxi.

The traffic is very convenient.

Staff:

About 600 employees, including 150 technicians.

Strategy:

We strive to provide the top grade quality products and best services to the customers. Keep developing the new products which are energy saving, environment protective and keep investing for the new equipments and new technologies.

Supplying ability:

10000MT per month for the tubes and pipes

5000MT per month for the steel plates

Global cooperation partners:

Covanta, Foster Wheeler, RCR Energy, ALSTOM, POSCO, Dongfang Electric, Shanghai Electric, China Huaneng, China Guodian, China Datang Corporation, Huaguang Boiler, Haerbin Boiler, Dongfang Boiler, Hangzhou Boiler, Bao Steel, Tisco, Shagang Steel......

Our products' quality is ensured by advanced, excellent facilities and manufacturing equipment. We have introduced many advanced processing and inspection equipments, including plasma cutting machine, NC drilling equipment, automatic welding system, welding equipment and real-time online imaging detection system, etc., which successfully ensure excellent quality of our products.