20 Years of Experience in Seamless Steel Tube Production

Percision Galvanized Steel Tube

Percision Galvanized Steel Tube
Percision Galvanized Steel Tube
Percision Galvanized Steel Tube

Synopsis of Process Routing

DIN high precision cold drawn bright seamless steel tube is used as the tube to be galvanized on the outer surface, caps are covered at two ends of tube to prevent from the dust.

Main Application

Automotive, military, rail way industry and other fields with high requirement of the tube’s brightness, cleanness, antirust and antisepsis.

Main Features

High precision

Great property of anti-rust
and antisepsis

Color is homogeneously
distributed on the tube surface 
and good roughness.

High cleanness
of inside wall

The steel tube is able to withstand high pressure. No deformation after cold bending, no crack after flaring and flattening. The complicated geometrical forming and machining can be realized. 

Color of tube: Different color
of Zinc such as white, yellow,
army-green, black

Customer Question

Q: What is precision tolerance tolerance of tube?


Name Scope GB Series DIN series mm
Enterprise internal control 
standards mm
Special high-precision mm
OD 4~30 ±0.10 ±0.08 ±0.05 ±0.03
31~40 ±0.15 ±0.15 ±0.05 ±0.03
41~50 ±0.20 ±0.20 ±0.08 ±0.03
51~60 ±0.25 ±0.25 ±0.08 ±0.03
Wall 0.5~7 ±10%;MIN±0.12 ±10% ±10%;MIN±0.05 ±10%;MIN±0.03
Q: What is the pressure resistance of the tube?

A: The pressure table of tube Download

Q: What is the delivery time of tube?

A: Our products will be delivered within 30 days.

Q: How long can the tube be stored?

    NBK 1 years without rust
    NBK+Phosphated 2 years without rust
    NBK+Galvanized 3 years without rust

Additional Services

Pipe cutting service
End planing
Spray mark
Surface treatment
Sourcing hard-to-find products

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