Construction

High quality Q235 Q345 6m 12m iron rectangular tube welded galvanized zinc square tube

DETAILS AND PARAMETERS

TOLERANCES

TECHNICAL SHEET

Engineer with confidence using our high-strength Structural Hollow Sections. Specifically designed for load-bearing applications, our RHS and SHS are produced from grades like S355J2H and S355NH, offering superior yield strength and impact resistance. The flat surfaces of our RHS tubes simplify connections and welding, reducing fabrication time and cost. Whether you're constructing commercial buildings, industrial platforms, bridge supports, or seismic-resistant frameworks, our tubes deliver unparalleled structural integrity and longevity, backed by EN 10204 3.1 certification.

公差表

Tolerance:

Length	+/- 50 MM
Wall Thickness	+/- 12.5%
Weight	+/- 8%

Square Hollow Section
Size	Thickness	Size	Thickness	Size	Thickness
mm	mm	mm	mm	mm	mm
50 X 25	2.0	120 X 40	3.0	20 x 20	2.0
50 X 25	2.5	120 X 40	3.6	20 x 20	2.5
50 X 25	3.0	120 X 40	4.0	25 x 25	2.0
50 X 30	2.5	120 X 40	5.0	25 x 25	2.5
50 X 30	3.0	120 X 40	6.0	25 x 25	3.0
50 X 30	3.2	120 X 40	6.3	30 x 30	2.5
50 X 30	4.0	120 X 60	3.0	30 x 30	3.0
60 X 40	2.5	120 X 60	3.6	40 x 40	2.0
60 X 40	3.0	120 X 60	4.0	40 x 40	2.5
60 X 40	3.2	120 X 60	5.0	40 x 40	3.0
60 X 40	4.0	120 X 60	6.0	40 x 40	4.0
80 X 40	3.0	120 X 60	6.3	50 x 50	2.0
80 X 40	3.2	120 X 80	3.0	50 x 50	2.5
80 X 40	4.0	120 X 80	4.0	50 x 50	3.0
80 X 60	2.5	120 X 80	5.0	50 x 50	4.0
80 X 60	3.0	120 X 80	6.0	50 x 50	5.0
80 X 60	3.6	120 X 80	6.3	60 x 60	3.0
80 X 60	4.0	150 X100	3.0	60 x 60	4.0
80 X 60	5.0	150 X100	4.0	60 x 60	5.0
90 X 50	2.5	150 X100	5.0	70 x 70	3.0
90 X 50	3.0	150 X100	6.0	70 x 70	3.6
90 X 50	3.6	150 X100	6.3	70 x 70	5.0
90 X 50	4.0	160 X 80	3.0	80 x 80	3.0
90 X 50	5.0	160 X 80	4.0	80 x 80	3.6
100 X 40	3.0	160 X 80	5.0	80 x 80	5.0
100 X 40	3.6	160 X 80	6.0	80 x 80	6.0
100 X 40	4.0	160 X 80	6.3	90 x 90	3.0
100 X 40	5.0	200 X 100	4.0	90 x 90	3.6
100 X 50	3.0	200 X 100	5.0	90 x 90	5.0
100 X 50	3.6	200 X 100	6.0	90 x 90	6.0
100 X 50	4.0	200 X 100	6.3	100 x 100	4.0
100 X 50	5.0	200 X 100	8.0	100 x 100	5.0
100 X 50	6.0	200 X 100	10.0	100 x 100	6.0
100 X 50	6.3	200 X 100	12.5	100 x 100	8.0
100 X 60	3.0	200 X 100	16.0	100 x 100	10.0
100 X 60	3.6	250 X 150	6.3	120 x 120	5.0
100 X 60	4.0	250 X 150	8.0	120 x 120	6.0
100 X 60	5.0	250 X 150	10.0	120 x 120	8.0
100 X 60	6.0	250 X 150	12.5	120 x 120	10.0
100 X 60	6.3	250 X 150	16.0	150 x 150	5.0
100 X 80	3.0	300 X 200	6.3	150 x 150	6.0
100 X 80	3.6	300 X 200	8.0	150 x 150	8.0
100 X 80	4.0	300 X 200	10.0	150 x 150	10.0
100 X 80	5.0	300 X 200	12.5	180 x 180	6.0
100 X 80	6.0	300 X 200	16.0	180 x 180	8.0
100 X 80	6.3	400 X 200	10.0	180 x 180	10.0
		400 X 200	12.5	180 x 180	12.5
		400 X 200	16.0	200 x 200	6.0
		450 X 250	10.0	200 x 200	8.0
		450 X 250	12.5	200 x 200	10.0
		450 X 250	16.0	200 x 200	12.5
				250 x 250	8.0
				250 x 250	10.0
				250 x 250	12.5
				300 x 300	8.0
				300 x 300	10.0
				300 x 300	12.5

Steel Grade: Q195, Q215, Q235, Q345, S235JR, S275JR, SS4007

Data	Elements（%）
Materal Grade	C	Mn	S	P	Si
Q195	0.06-0.12	0.25-0.50	<0.05</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="13.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.045</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="11.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.30</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> <tr> <td width="25.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Q215</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="17.7200%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">0.09-0.15</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="17.7200%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">0.25-0.55</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="13.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.05</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="13.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.045</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="11.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.30</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> <tr> <td width="25.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Q235</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="17.7200%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">0.12-0.20</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="17.7200%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">0.30-0.70</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="13.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.045</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="13.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.045</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="11.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.30</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> <tr> <td width="25.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Q345</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="17.7200%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.20</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="17.7200%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">1.0-1.6</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="13.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.04</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="13.5800%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.04</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="11.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;"><0.55</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> </tbody> </table> <p class="MsoBodyText"> <b>Mechanical property</b> </p> <table class="MsoNormalTable ke-zeroborder" border="0" cellspacing="0" style="width:99.96%;border:none;"> <tbody> <tr> <td width="21.3400%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Materal Grade</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="24.8600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Yield point (Mpa)</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="32.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Tensile Strength (Mpa)</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="21.0000%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Elongation(%)</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> <tr> <td width="21.3400%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Q195</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="24.8600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">>195</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="32.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">315-430</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="21.0000%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">32-33</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> <tr> <td width="21.3400%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Q215</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="24.8600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">>215</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="32.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">335-450</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="21.0000%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">26-31</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> <tr> <td width="21.3400%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Q235</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="24.8600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">>235</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="32.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">375-500</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="21.0000%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">24-26</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> <tr> <td width="21.3400%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">Q345</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="24.8600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">>345</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="32.7600%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">470-630</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> <td width="21.0000%" valign="center" style="border:1.0000pt solid #CCCCCC;background:#FFFFFF;"> <p class="p" align="center" style="margin-left:0.0000pt;text-align:center;"> <b><span style="font-family:微软雅黑;color:#222222;font-size:7.5pt;">21-22</span></b><span style="font-family:Calibri;font-size:12.0000pt;"></span> </p> </td> </tr> </tbody> </table> Related Posts Construction 2025-09-17 16:40:28 Factory galvanized p... hot roll welded square tube Hollow Section ERW Sq... 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