Hot Rolled Q345b Square Steel for Robotic Arm Structures

• Customization: Available
• Connection Form: Welded Connection
• Feature: Anti-Corrosion, Earthquake Resistance, Easy To Install, High Intensity, Recyclable
• Install: Online Guidance
• MOQ: 1 Ton
• Delivery Time: 7-10 Days
• Provide Free Samples: Yes
• Transport Package: in Bundles with Steel Straps
• Specification: Q235 Q355 S235 A36 Ss400 Ect.
• Origin: China
• HS Code: 7214990000
• Production Capacity: 60000 Tons/Year

Product Description

Product Description

Steel Profiles 
 

Material Standard
Commonly used materials:

Q235B,Q355B,SS400
Execution standard:

GB, ASTM, JIS, AISI, DIN, BS
 

Usage:

Construction,Machinery

Differences in Processes for Different Materials

Hot Rolled Square bar: Billet heating (1200°C) → rough rolling (billet forming) → finishing rolling (sizing) → cooling → straightening → cutting → inspection
Cold drawn/cold rolled square steel (high precision):Hot rolled coils → pickling (de-oxidizing) → cold drawing/cold rolling (multi-pass reduction) → annealing (stress relieving) → finishing → cutting
Special treatment processes
Galvanizing: hot-dip galvanizing or electro-galvanizing for corrosion protection (e.g. outdoor guardrail).
Polishing: Mechanical or electrolytic polishing to enhance surface finish (e.g. furniture, medical equipment).
Suggestions for selection:
Load-bearing structure: choose large cross-section (e.g. above 50×50mm) + Q355B material.
Precision assembly: choose cold-drawn square steel to ensure dimensional consistency.

 

Typical Application Areas1. Building and structure
Steel structure frame: plant columns, roof truss (Q355B 50×50mm).
Stair handrail: stainless steel square (304 30×30mm).
2. Machinery Manufacturing
Equipment racks: machine base, conveyor rail (Q235B 40×40mm).
Mold fittings: cold-drawn precision square steel (±0.1mm tolerance).
3. Decoration and Furniture
Door and window frames: galvanized square steel (20×20mm).
Display racks/shelves: Lightweight cold-formed square steel (15×15mm).
4. Other fields
Automobile parts: chassis bracket (Q355B 60×60mm).
Agricultural facilities: greenhouse skeleton (hot-dip galvanized square steel).

 

Main Products

Company Profile

Emerging in the 1980s,Lecong Steel World draws on over forty years o successful steel trading experience and officially established in 2009.Over the past decade,we are committed to develop a comprehensive supply chain system encompassing 'metal trading-warehousing-logistics-processing and distribution,'offering one-stop solutions for global manufacturing,infrastructure,machinery,construction,fire engineering,municipal projects,steel structure initiatives,and more than 20 steel-using industries.As of today,the park has evolved into the largest wholesale market for metal materials worldwide.Our Global is to empower our clients to gain competitive advantages through cost reduction and improved efficiency,thereby establishing our premium brand image in the global metal industry.

Workshop & Equipment

Exhibitions & Our Customers

Certifications

Packaging & Shipping

FAQ

1. How long has your company been established? Do you have import and export rights?

           We Steel World established in 2009,and owns the rights to export.

1. Is there a factory or production line? Can you provide photos/videos of the factory? Is it possible to visit the factory?

           We have our own machining centre and large diameter pipe factory, we can provide you with the factory photos and production line videos you want, and                you are always welcome to visit our factory.

1. Availability of international product certification and industry certification (e.g. ISO, CE, RoHS, etc.)

           We can meet customers' international product certification, such as: GB, EN, JIS, Australian Standard and so on.
            The factories under our company have met the ISO certification, ROHS and other certifications.

        4. What is the minimum order quantity (MOQ)? Is it in stock? How long is the lead time?
            MOQ and lead time will depend on specific products. We mainly deal in stock and can deliver in 2-3 days. However, for special requirements, customisation               is required and lead time is needed.
      5.What payment methods are accepted?
          We can accept TT, LC, PayPal,West Union and other payment methods.