Large Diameter Hollow Steel Tube ERW Steel Pipe Welded Precision
E355 E235 Steel Pipe
The galvanized steel pipe is immersed in the zinc protective layer
to protect the pipe from corrosion in the humid environment, so as
to prolong the service life. It is most commonly used in plumbing
and other water supply applications. Galvanized pipe is also a
low-cost substitute for steel, which can achieve rust protection
for up to 30 years, and maintain comparable strength and durable
1. Technology of Hot Rolled, Cold Rolled or Cold drawn.
2. Hollow cross-section with lighter weight and higher pressure.
3. High hardness, strength, wear resistance and anti-corrosion.
4. The SMLS can becut, threaded or grooved. And the coating method
includes black / red lacquer, varnish painting, hot dip
Beveled end, plain end, vanished, or adding plastic caps to protect
the two ends as per customer's
|Oiled, Galvanized, Phosphate etc|
|Technique||Cold drawn & cold rolled|
|Application||1. Automotive and mechanical pipes|
|2. Petroleum cracking pipes|
|3. High Pressure Boiler Pipe|
|4. Low and middle pressure fluid transportation pipeline|
|5. Chemical fertilizer equipment pipes|
|6. Heat exchanger pipes|
|1. BK (+C)||No heat treatment after last cold forming process.|
|2. BKW (+LC)||After last heat treatment there is a light finishing pass (cold
|3. BKS (+SR)||After the final cold forming process the tubes are stress relieve
|4. GBK (+A)||After the final cold forming process the tubes are annealed in a
|5. NBK (+N)|
After the final cold forming process the tubes are annealed above
transformation point in a controlled atmosphere.
|Package||1. Bundle Packing.|
|2. Plain end or vanished as per customer's request.|
|3. Wrapped in waterproof paper.|
|4. Sackcloth with several steel strips.|
|5. Pack in heavy tri-wall boxes.|
Delivery condition of seamless cold drawn mechanical tubing
BK (+C) Cold finished/hard (cold finished as drawn).
BKW (+LC) Cold finished/soft
BKS (+SR) Cold finished/stress relieve annealed.
GBK (+A) Annealed.
NBK (+N) Normalized.
Fuel injection lines/nozzles for diesel or gasoline engine;
Compressed natured gas CNG tube
Drive transmission: steering column elements