• Origin：Tianjin and Qingdao
• Trademark：Wanrunda
• Specification：40x40x3mm x 2400mm
• Transport Package：Wrapped by Plastic Film, Packed in Bundles
• Thickness Tolerance：+,- 0.1mm
• Length：2400mm
• Thickness：3mm
• Size：40X40mm
• Model NO.：40x40x3mm x 3.0meters
• HS Code：7306610000
• Production Capacity：100000mt,Year

Material
Chemical
Composition
(%)Q195CMnSiSP 0.06-0.120.25-0.50≤0.30≤0.050≤0.045 Tensile strength: 315-430(Mpa)Yield strength:195(Mpa)Elongation:33Q235CMnSiSP 0.12-2.00.3-0.70≤0.30≤0.045≤0.045 Tensile strength: 375-460(Mpa)Yield strength:235(Mpa)Elongation:26Q345CMnSiSPV≤0.20≤1.70≤0.55≤0.040≤0.0400.02-0.15Tensile strength: 470-630(Mpa)Yield strength:345(Mpa)Elongation:21

Normal dimension of steel pipeSquare (SHS)Rectangular(RHS)Circle (CHS)Out dia.
(mm)Wall thickness
(mm)Out dia.
(mm)Wall thickness
(mm)Out dia.
(mm)Wall thickness
(mm)10x100.5-1.010x200.6-1.0100.5-1.012x120.5-1.012x250.6-1.0120.6-1.016x160.6-1.220x400.6-1.6160.6-1.019x190.6-1.525x500.8-2.75190.6-1.520x200.6-1.630x500.8-3.0200.6-1.525x250.8-2.7530x600.8-3.021.50.6-1.530x300.8-2.7540x601.0-4.0250.8-2.7532x321.0-3.040x801.5-4.0270.8-2.7538x381.0-3.050x751.5-4.0320.8-3.040x401.0-3.550x1002.0-6.038.11.0-3.050x501.0-5.050x1252.0-6.042.51.0-3.560x601.0-6.050x1503.0-6.048.41.0-5.063.5x63.51.0-6.060x801.5-6.050.81.0-5.070x701.5-6.060x1002.0-6.063.51.0-6.075x751.5-6.060x1202.0-6.0681.2-6.080x802.0-6.075x1002.0-6.0701.2-6.090x902.0-6.075x1252.0-6.0731.4-6.0100x1002.3-6.075x1503.0-6.0761.4-6.0120x1203.0-6.080x1202.0-6.0802.0-6.0125x1253.0-6.080x1603.0-6.0892.0-6.0150x1503.5-8.0100x1504.0-12902.0-6.0200x2004.0-12100x1754.0-12952.0-6.0250x2505.0-12100x2004.0-121002.3-6.0300x3005.0-14150x2004.0-121022.3-6.0350x3506.0-14150x2504.0-141082.3-6.0400x4006.0-18150x3005.0-161102.3-6.0500x5008.0-20200x3005.0-161142.3-6.0600x6008.0-20200x4006.0-161333.0-6.0  300x5006.0-201403.0-8.0  400x6008.0-201523.0-8.0    1653.0-8.0    1903.5-12    2004.0-12    2194.0-12    2734.0-14    3255.0-16    3775.0-16    4266.0-20 
Process flow of Rectangular and Square steel pipe:
Company introduction:
QINGDAO WANRUNDA IMP AND EXP CO.,LTD is a special and experienced steel supplier and exporter, can manufacture according to ASTM,JIS,DIN,API standard. We have exported to Australia, Doha, Sri Lanka, India, Turkey, Kyrgyzstan, Russia, Canada, Poland, Middle east countries and African countries, We got very good reputation from all our cooperative clients;
We mainly manufacture and sale various kinds of steel pipe, include Welded pipe/Galvanized steel pipe/Pre-Galvanized steel pipe/Square and Rectangular hollow section/Furniture pipe/Warmhouse booth pipe/stainless steel pipe etc ; Steel coil include Pre-Galvanized steel coil and stainless steel coil; Steel profile include Angle steel/Channel steel/Steel checkered plate/Square steel/C-channel steel etc. We also deal with assorted products, such as Flange/Steel hinge/Plastic pipe plug and cap etc.

 Qingdao Wanrunda Imp and Exp Co.,ltd is a special manufacturer and exporter for steel products.
We mainly export Steel hollow section( SHS,RHS,CHS)/Galvanized steel pipe/ Pre-galvanized steel pipe/ Hot dip galvanized pipe/ Bright finished pipe/ furniture pipe/ Welded steel pipe/ Seamless steel pipe/ Spirale steel pipe/ Stainless steel tube.
Galvainzed steel coil/Stainless steel coil/Angle steel/H beam/Channel beam/ C beam/Riffled sheet/Square bar etc