High Precision Galvanized Steel Tube from China manufacturer

Payment Terms:	T/T,L/C
Place of Origin:	Jiangsu, China (Mainland)


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Product Detail

Means of Transport: Ocean,Land,Air

Packing: covered with caps at two en...

Production Capacity: 650 tons per month

Delivery Date: within 40 days

Material: ST37.4,ST44.4,ST52.4 Standard: DIN1630
Outer Diameter: 4 To 60mm Surface Treatment: Galvanized

Detailed Product Description

Material:	ST37.4,ST44.4,ST52.4	Standard:	DIN1630
Outer Diameter:	4 To 60mm	Surface Treatment:	Galvanized
Technique:	Precision Cold Drawn Seamless Carbon Steel Tube	Thickness:	0.5 To 7mm

High Precision Galvanized Steel Tubing DIN1630 , OD 4mm - 60mm TH 0.5mm - 7m

Quick Detail:

DIN1630 Precision zinc coated tube ST37.4 OD8x1.5x4000

Good antirust effect,zinc distributed on the surface

No deformation after cold bending,no crack after flaring and flattening.

Description:

Synopsis of Process Routing: DIN highly accurate cold drawn bright seamless steel tube is used as the tube to be galvanized, the outer wall is electroplated, caps are covered at two ends of tube to prevent from the dust.

Main Features: Different color of zinc such as white, yellow, army-green, black is evenly distributed in the surface of the tube, good brightness and antirust and antisepsis could improve after zinc coated.

Applications:

Automotive,military,railway industry,with high requirement of the tube's brightness, cleanness,antirust,and antisepsis.

Specifications:

Size:OD4mm-60mm,TH0.5mm-7mm

Standard:DIN1630

Material: ST37.4,ST44.4,ST52.4

Delivery State:NBK+Black phosphate.

Galvanized tube category and related standard
Galvanized tube category	Related Standard	Zinc coating thickness	Salt spray test
Gr3+ Galvanized tube with blue and white zinc	ASTM B633-07 (Type III,SC 1/2/3/4)	5-25um	24--72 hours without white rust;48--168 hours without red rust
Gr3+ Galvanized tube with color zinc	ASTM B633-07 (Type II,SC 1/2/3/4)	5-25um	48--96 hours without white rust;48--240 hours without red rust
Gr6+ Galvanized tube with color zinc	ASTM B633-98 (Type II,SC 1/2/3/4)	5-25um	24--96 hours without white rust;48--124 hours without red rust

Chemical composition(cast analysis)a
Steel grade		% by mass
Steel name	Steel number	C	Si	Mn	P	S
Steel name	Steel number	max.	max.		max.	max.
ST37.4	1.0255	0.17	0.35	≥0.35	0.025	0.025
ST44.4	1.0257	0.21	0.35	≥0.40	0.025	0.025
ST52.4	1.0581	0.22	0.35	≤1.60	0.025	0.025

Mechanical properties at room temperature
Steel grade		Minimum values for the delivery condition
Steel name	Steel number
Steel name	Steel number	Rm(Mpa)	Re(Mpa)	A(%)
ST37.4	1.0255	235	350-480	25
ST44.4	1.0257	275	420-550	21
ST52.4	1.0581	355	500-650	21