E355 Cold Drawn Seamless Rectangular Tube
Premium Rectangular Hollow Section with Tight Tolerance and Seamless Strength
Model: CX-06
Brand: CHENGXIN
HS Code: 73049000
Size Range: 80mm×60mm – 300mm×200mm
Wall Thickness: Up to 35mm
Category: Rectangular Hollow Section (RHS) / Seamless Rectangular Steel Tube
Product Overview
Our E355 Cold Drawn Seamless Rectangular Tube—also referred to as cold rolled rectangular tubing or seamless rectangular hollow section (RHS)—is produced through hydraulic cold drawing from high-quality hot rolled seamless steel pipes. Unlike welded hollow sections, this product offers complete structural integrity with no welding seam, making it suitable for high-performance mechanical and hydraulic systems. It features exceptional dimensional precision, straightness, and surface finish, ideal for demanding industrial applications requiring enhanced strength and accurate tolerances.
Technical Specifications
Product Name: E355 Cold Drawn Seamless Rectangular Steel Tube (Cold Rolled Rectangular Tubing)
Manufacturing Standard & Steel Grades:
EN 10305-1: E195, E235, E355, C35E, C45E, 25CrMo4, 42CrMo4
DIN 2391-2: ST35, ST45, ST52
ASTM A519: SAE1020, 1026, 1045, 1518, 1541, 4130, 4140, 4340
EN 10305-4: E215, E235, E355
GB/T 3639: 10#, 20#, 45#, Q345B, Q345E, 27SiMn
Size Range:
Side Dimensions: 80mm×60mm to 300mm×200mm
Wall Thickness: up to 35mm
Manufacturing Process:
Hydraulic Cold Drawing
Cold Rolling (available upon request)
Delivery Conditions:
+LC / BKW – Cold drawn
+SR / BKS – Stress relieved
+A / GBK – Annealed
+N / NBK – Normalized
End Finish:
Plain cut, square or beveled ends
Free of burrs and oil-coated internally and externally
Marking:
Laser or ink printing: CHENGXIN / Size / Grade / Heat Number
Packaging:
Bundled with steel strips
Internal/external oil coating
PVC and knitted bag protection
Wooden pallet or plywood crate packing on request
Key Features & Benefits
Seamless Construction – Higher mechanical strength and pressure tolerance
E355 Grade Steel – Excellent yield strength and elongation
Tight Tolerances – Accurate fit and improved efficiency in assembly
Smooth Surface Finish – Reduced friction and wear in dynamic systems
Custom Dimensions Available – Fit to your drawing or system requirements
Chrome Plating Optional – Anti-rust finish for extended outdoor or hydraulic use
Applications
Hydraulic cylinders and hollow piston rod production
High-precision mechanical structures
Automotive structural components
Agricultural and construction equipment
Engineering machinery requiring high load-bearing capacity
Telescopic arms and lift devices
Cold rolled rectangular tubing frames for structural applications
Frequently Asked Questions (FAQ)
Q: What’s the main difference between seamless and welded rectangular tubes?
A: Seamless tubes, such as ours, provide superior mechanical strength and internal pressure resistance compared to welded options, making them ideal for hydraulic and high-load applications.
Q: Can I request a custom steel grade or size?
A: Yes, we offer full customization of steel grade, dimensions, and tolerances based on your technical drawings or performance requirements.
Q: How are the tubes protected during shipping?
A: Tubes are bundled, oiled inside and out, and covered with PVC and knit bags. Wooden crates or pallets are available upon request.
Q: Do you offer cold rolled rectangular tubing in other shapes (e.g., square)?
A: Yes, we supply both cold drawn square hollow sections (SHS) and rectangular hollow sections (RHS).
Order & Delivery
MOQ: 5 tons/size (negotiable depending on dimensions and grade)
Lead Time: 30–45 days from deposit or L/C
Payment Options: T/T, L/C, D/P based on client verification
Warranty: 6-month quality guarantee post-delivery (excludes damage from mishandling)
About Us
CHENGXIN METAL PRODUCTS is a leading manufacturer of cold drawn and cold rolled steel tubes since 2002. Our 32,000㎡ facility includes 12 standard workshops, 2 hydraulic cold drawing benches, 4 chain benches, and 2 ERW mills. We support full production—from pickling and drawing to heat treatment and packaging—with advanced inspection and die-making capabilities in-house.
Looking for a reliable supplier of cold rolled rectangular tubing? Contact us today for technical consultation, samples, or a free quote tailored to your project needs.
