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Pickled Annealed Hollow Steel Tube Large Diameter E355 E235 Threading Available

Place of Origin Jiangsu, China
Brand Name Hongbao
Certification TS16949,DNV,PED,ISO,TUV,LR
Model Number HBHST-1
Minimum Order Quantity 1 ton
Price Negotiable
Packaging Details Original packaging according to the customers Export standard package in bundled or as required.
Delivery Time within 50 days
Supply Ability 30000MT per year
Product Details
Brand Hongbao Material ST37.4,ST52.4,E235,E355,26MnB5,34MnB5
OD 6-120mm Thickness 0.5-15mm
Shape Round Type Welded Or Seamless
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Pickled Annealed Hollow Steel Tube


E355 Hollow Steel Tube


0.5mm Hollow Steel Tube

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Product Description

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 surface coating.


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 galvanization, etc.



End Shape

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 drawing)
3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed.
4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere.
5. NBK (+N)

After the final cold forming process the tubes are annealed above the upper

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