-
About us
Tianjin lefin Industrial
TIANJIN LEFIN STEEL GROUP containing Tianjin lefin Industrial Co.,Ltd. 、Tianjin lefin steel import & export Co.,Ltd and Tianjin Shengqifeng International Trading Co., Ltd. -
Products
Steel Pipe Processing
Our main products include 1/2inch to 16 inch ERW PIPE/GI PIPE which has been produced according to BS1387/ASTM A53/EN10219/EN10255/EN10217 Standard -
-
Service Capability
Guarantee Quality
Our steel pipes are suitable for oil, natural gas, shipbuilding, chemical industry, water conservancy, electrical, steel structure, construction and other related fields.
- Details
-
Rectangular hollow section, also known as RHS steel, is a type of steel pipe that is characterized by its rectangular cross-sectional shape. RHS steel is often used in construction and engineering, as it provides good structural support. It can also be galvanized, which means that it has been coated with a thin layer of zinc to protect it from corrosion. Rectangular hollow section steel is available in a variety of sizes and thicknesses, making it a versatile material for a wide range of applications.
SIZES:20MMX10MM--1500MMX1000MM WT:1.5MM--50MM LENGTH:1-26M
ASTM A500/501 Gr. A/B/C/D,ASTM A513 (1020-1026),ASTM A36 (A36)
EN 10210:S235,S355,S235JRH,S355J2H,S275NH,S275NLH,S355NH,S355NLH,S420NH,S460NH,S460NLH
EN 10219:S235,S355,S235JRH, S275J0H, S275J2H, S355J0H, S355J2H,S275NH,S275NLH,S355NH,S355NLH,S420NH,S460NH,S460NLH
JIS G3466:STKR400,STKR490,SS400
AS1153: C250,C350,C450
CSA G40.20/G40.21:300W/350W
GB/T6728/3094:Q195/235/355.
APPLICATION OF RECTANGULAR HOLLOW SECTION
Rectangular Hollow Section (RHS) has intrinsically flat surfaces, which makes joining and manufacturing cheaper. It is widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container skeleton, furniture, decoration, and steel structure.
APPEARANCE OF RECTANGULAR HOLLOW SECTION
The pipe’s external and inner surfaces must be smooth, devoid of fissures, cracks, material overlay, and non-metallic impurities. Small scratches, dents, a thin layer of welding cinder, or traces left after cleaning manufacturing flaws are permitted, as long as the wall thickness does not fall below the minimum authorized limitations. The weld shall be compact and continuous, and shall not have cracks or other defects that reduce the weld resistance under the resistance of the base metal.
The welding seam’s external ledge is eliminated. Thickening of the seam is acceptable within the range of authorized diameter restrictions. The welding seam’s inside burr is not eliminated. Unevenness on the metal strip’s borders in the welding seam is not permitted. The pipe’s ends must be cut perpendicular to its axis. It is permissible to have a burr on the pipe ends as a result of the cutting operation. Pipe end deformation is not permitted.
CHEMICAL COMPOSITION OF RECTANGULAR HOLLOW SECTION
Chemical Requirements Element Composition, % Grades A, B, and D Grade C Heat Analysis Product Analysis Heat Analysis Product Analysis Carbon, max A 0.26 0.30 0.23 0.27 Manganese, max A 1.35 1.40 1.35 1.40 Phosphorus, max 0.035 0.045 0.035 0.045 Sulfur, max 0.035 0.045 0.035 0.045 Copper, min B 0.20 0.18 0.20 0.18 MECHANICAL PROPERTY OF RECTANGULAR HOLLOW SECTION
Item Grade A Grade B Grade C Grade D Tensile Strength, mn, ps (MPa) 45 000
(310)58 000
(400)62 00
(427)58 000
(400)Yield Sstrength, mn, psi (MPa) 39 000
(269)46 000
(317)50 000
(345)36 000
(250)Elongation in 2 in. (50.8 mm), min, %A 25B 23C 21D 23C
RECTANGULAR HOLLOW SECTIONS
Subcategory
Keyword
- Details
-
Rectangular hollow section, also known as RHS steel, is a type of steel pipe that is characterized by its rectangular cross-sectional shape. RHS steel is often used in construction and engineering, as it provides good structural support. It can also be galvanized, which means that it has been coated with a thin layer of zinc to protect it from corrosion. Rectangular hollow section steel is available in a variety of sizes and thicknesses, making it a versatile material for a wide range of applications.
SIZES:20MMX10MM--1500MMX1000MM WT:1.5MM--50MM LENGTH:1-26M
ASTM A500/501 Gr. A/B/C/D,ASTM A513 (1020-1026),ASTM A36 (A36)
EN 10210:S235,S355,S235JRH,S355J2H,S275NH,S275NLH,S355NH,S355NLH,S420NH,S460NH,S460NLH
EN 10219:S235,S355,S235JRH, S275J0H, S275J2H, S355J0H, S355J2H,S275NH,S275NLH,S355NH,S355NLH,S420NH,S460NH,S460NLH
JIS G3466:STKR400,STKR490,SS400
AS1153: C250,C350,C450
CSA G40.20/G40.21:300W/350W
GB/T6728/3094:Q195/235/355.
APPLICATION OF RECTANGULAR HOLLOW SECTION
Rectangular Hollow Section (RHS) has intrinsically flat surfaces, which makes joining and manufacturing cheaper. It is widely used in machinery manufacturing, construction industry, metallurgical industry, agricultural vehicles, agricultural greenhouses, automobile industry, railway, highway guardrail, container skeleton, furniture, decoration, and steel structure.
APPEARANCE OF RECTANGULAR HOLLOW SECTION
The pipe’s external and inner surfaces must be smooth, devoid of fissures, cracks, material overlay, and non-metallic impurities. Small scratches, dents, a thin layer of welding cinder, or traces left after cleaning manufacturing flaws are permitted, as long as the wall thickness does not fall below the minimum authorized limitations. The weld shall be compact and continuous, and shall not have cracks or other defects that reduce the weld resistance under the resistance of the base metal.
The welding seam’s external ledge is eliminated. Thickening of the seam is acceptable within the range of authorized diameter restrictions. The welding seam’s inside burr is not eliminated. Unevenness on the metal strip’s borders in the welding seam is not permitted. The pipe’s ends must be cut perpendicular to its axis. It is permissible to have a burr on the pipe ends as a result of the cutting operation. Pipe end deformation is not permitted.
CHEMICAL COMPOSITION OF RECTANGULAR HOLLOW SECTION
Chemical Requirements Element Composition, % Grades A, B, and D Grade C Heat Analysis Product Analysis Heat Analysis Product Analysis Carbon, max A 0.26 0.30 0.23 0.27 Manganese, max A 1.35 1.40 1.35 1.40 Phosphorus, max 0.035 0.045 0.035 0.045 Sulfur, max 0.035 0.045 0.035 0.045 Copper, min B 0.20 0.18 0.20 0.18 MECHANICAL PROPERTY OF RECTANGULAR HOLLOW SECTION
Item Grade A Grade B Grade C Grade D Tensile Strength, mn, ps (MPa) 45 000
(310)58 000
(400)62 00
(427)58 000
(400)Yield Sstrength, mn, psi (MPa) 39 000
(269)46 000
(317)50 000
(345)36 000
(250)Elongation in 2 in. (50.8 mm), min, %A 25B 23C 21D 23C
Related products
Product Consulting
Address: Hengtai Road,Daqiuzhuang Town,Jinghai County,Tianjin,China
Mob: +8615122229899(whatspp)
Phone: +86 22 58171905
Fax: +86 22 58171902
E-mail:info@lefinsteel.com
Get company updates
Tianjin Lefin Industrial Co.,Ltd. All rights reserved City sub-station SEO www.300.cn