Galvanized steel scaffolding tube commonly used specifications: 4, 6 points, 1 inch, 1.2 inch, 1.5 inch, 2 inch, 2.5 inch, 3 inch, 4 inch, 5 inch, 6, 8 inches.
The length of the standard

A, appearance and weight
1, usually the length of the
Galvanized steel scaffolding tube length is 6 m, allows the weight of each lot of no greater than 5%, the total weight and short feet steel tube length is not less than 2 m.
2, the specified length
Length of galvanized steel scaffolding tube should be in the foot length is usually within the allowable deviation of + 20 mm length.
3, The Times' length
Galvanized steel scaffolding tube times' length should be within the scope of the length is usually the rest of the allowable deviation of + 20 mm long. Each times' should be 5 mm - 10 mm margin incision.
4, bending
Galvanized steel scaffolding tube should be straight degree with usability.

5, end shape
The ends of the galvanized steel scaffolding tube should be galvanized before cut at right angles to the scaffolding tube axis, incision, both inside and outside burr height shall be greater than 0.5 mm.
6, delivery of the goods weight
Galvanized steel scaffolding tube with actual weight delivery of the goods.

7, mark
Galvanized steel scaffolding tube should indicate the gb standard and manufacturer name number and size.
Second, galvanized steel scaffolding tube quality and technical requirements:
1, grades, and chemical composition
Galvanized steel scaffolding tube with steel grades and chemical composition should meet the requirements of GB - 3092 clarinet steel grades and chemical composition.

2, manufacturing methods,
Clarinet manufacturing method (furnace welding tube or electric welding) chosen by factory, galvanized by hot dip galvanizing.