方形空心部分

方形空心部分comes in different sizes, specifications and wall thicknesses.

Its uniformity makes it predictable to use and visually appealing.

It has a high weight-to-strength ratio.

It’s easy to bend, and because square steel tubing is inexpensive, it’s cost-effective- even for large projects.

方形空心部分，SHS，方形盒，涂漆，不文，ERW，黑色，温和钢

• S.teel Grade:Q235，Q345，S235JR，S275JR，SS4007
• S.urface Finish:热浸镀锌那预镀锌

S.teel tube is easily recyclable. Many projects take advantage of square steel tubing, including all types of buildings, highway guardrails and signage, support columns, trusses, bridges, heavy equipment, storage systems, and exercise equipment.

The hollow section provided by Sunny Steel is widely used in civil engineering & construction fields, those structural steel hollow sections are important constituent part of buildings and briges.

化学成分

钢级：Q195，Q215，Q235，Q345，S235JR，S275JR，SS4007-

Data	Elements（%）
Materal Grade	C	MN.	S.	P.	S.i
Q195	0.06-0.12	0.25-0.50	<0.05	<0.045	<0.30
Q215	0.09-0.15.	0.25-0.55	<0.05	<0.045	<0.30
Q235.	0.12-0.20	0.30-0.70	<0.045	<0.045	<0.30
Q345.	<0.20	1.0-1.6	<0.04	<0.04	<0.55

机械性质

Materal Grade	屈服点（MPA）	Tensile Strength (Mpa)	Elongation(%)
Q195	>195	315-430.	32-33
Q215	> 215.	335-450	26-31.
Q235.	> 235.	375-500.	24-26
Q345.	> 345.	470-630	21-22

Tolerance:

长度	+/- 50 MM
Wall Thickness	+/- 12.5%
重量	+/- 8%

Note:

A: with, T: wall thickness, SHS:Square Hollow Section, RHS: Rectangular Hollow Section

S.urface Finish:热浸镀锌，电镀镀锌，黑色

• Mill Test Certificate:EN 10204 / 3.1B
• Third party inspection:S.GS, BV, Lloyds etc.

Note:还提供预镀锌正方形/矩形中空截面，提供OD 19mm-70mm和厚度1mm-2.3mm。