What is the diameter tolerance?

Per GB/T 702, tighter tolerance for machining available on request.

How do I calculate round bar weight?

Weight is 0.00617 x diameter (mm) x diameter (mm) per meter, for example 50mm bar is 15.4 kg per meter.

Can the bar be threaded, bent or welded?

Yes, Q235B threads, bends and welds easily without preheating for normal sizes.

What certificates do you provide?

MTC with chemical composition and mechanical properties for every shipment, EN 10204 3.1 on request.

How long is the delivery time?

10-20 days after deposit for stock sizes, longer for mill production.

What are your payment terms?

T/T 30% deposit, 70% balance before shipment, L/C at sight for large orders.

How are the bars packed?

Bundled with steel straps, ends protected, suitable for container loading.

Can you provide samples?

Yes, small samples available with freight collect for quality check.

What trade terms do you support?

FOB, CFR, CIF from Tianjin, Qingdao or Shanghai port, other terms negotiable.

Can the bar be galvanized?

Yes, hot dip galvanizing can be arranged for outdoor applications.

ASTM A36 Hot Rolled Steel Round Bar for Structural Welding

Name: ASTM A36 Hot Rolled Steel Round Bar for Structural Welding
Brand: Tianjin Zengze Steel Trading Co., Ltd.
SKU: 1935457302

Tianjin, ChinaTianjin Zengze Steel Trading Co., Ltd.

US$780.00

1-24 Tons

US$750.00

25-49 Tons

US$720.00

50+ Tons

Product specifications

diameter

surface

Product profile

Customization

Available

After-sales Service

Quality Objection Within 10 Days Since Receiving

Warranty

6 Months

Model NO.

ZZ-B-139

Type

Carbon Steel, Alloy Steel

Standard

AISI, ASTM, GB, JIS, DIN, BS

Technique

Hot Rolled, Forged, Cold Drawn

Application

Structural Steel Bar, Tool Steel Bar, Die Steel Bar

Surface Treatment

Hot Rolled, Galvanized, Polished, Coated

Alloy

Alloy or Non-Alloy

Special Use

Mold Steel, Free Cutting Steel, Cold Heading Steel

Length

6m,9m,12m or Customized

Diameter

6-500mm

Steel Grade

Q235B, Q345b,Q345c,Q345D,Ss400,Ck45,4140,42CrMo

Material

Carbon Steel, Alloy Steel

Brand

Hbis, Laiwu

MOQ

1 Tons

Stock

More Than 10,000tons

Shipment Port

Tianjin, Qingdao, Shanghai

Shipping

by Container or Bulk Ship

Processing Services

Cutting, Polishing,Drilling

Technique Type

Cold Drawn, Hot Rolled, Forged

Delivery

Within 7 Days for Normal Size

Surface

Prime Original Surface, Galvanized or Coated

Warehouse Location

Tianjin, Hebei, Shandong

Payment Term

30%T/T, Balance Against Shipping Docs

Transport Package

Standard Exporting Package

Specification

6-500mm

Trademark

Zengze

Origin

China

HS Code

7214990000

Production Capacity

10000 Tons Per Month

Key features

10-300mm: From small bolts to heavy shafts, every common round bar diameter in one supply program

235MPa: Guaranteed minimum yield strength under GB/T 700, with predictable performance in every structure.

370-500MPa: Tensile range gives a safe margin for connections, threading and bending on site.

0.00617: Quick weight formula (0.00617 x diameter x diameter per meter) helps buyers calculate freight and cost in seconds.

6m / 12m: Standard lengths with custom cutting from 1m to 12m, clean ends, no waste on site.

GB/T 700 + GB/T 702: Material and dimension standards that are accepted by buyers in every market.

Low carbon: Welds, bends and machines easily without preheating, ideal for both shop and site work.

Three surfaces: Black as rolled, bright turned or precision ground, matching machining and appearance needs.

MTC Mill Test Certificate with every shipment.

10-20 days: Fast delivery after deposit from Tianjin, Qingdao or Shanghai port, stock sizes even faster.

Company profile

Importers and ExportersHigh Repeat Buyers ChoiceYears of Export ExperienceFast Delivery

Tianjin Zengze Steel Trading Co., Ltd.

Tianjin, China

CertifiedBusiness Type: Trading Company CertifiedCustomization Options: Customization from Samples CertifiedExport Year: 17 Years CertifiedNearest Port: Tianjin PortAverage Response Time: ≤0.72h CertifiedTerms of Payment: LC, T/T, D/P, etc.

About Our Factory & Business Background

AddressBeichen District Beicang Way Names Material, Tianjin, China

Plant Area50 square meters

Number of Employees2

Registered Capital5,000,000 RMB

International Commercial Terms(Incoterms)FOB, CIF, CFR, EXW

Average Lead TimePeak Season Lead Time: within 15 workdays Off Season Lead Time: within 15 workdays

Minimum Order Quantity100 Kg

Supply Chain Partners10

Our Production Capability & Technical Expertise

Main ProductsSteel And Laser Cladding Machine

R&D Engineers1 people

Our Industry Experience & Global Business Record

Year of Establishment2007-12-11

Main MarketsEurope, Domestic, Asia

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff1

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Cooperated with Fortune 500No

Product Q&A

Q:What is your MOQ for round bar?

Trial order from 1 ton, full container orders get better pricing.

Q:What diameters can you supply?

From 10mm to 300mm, larger diameters up to 500mm available on request.

Q:Can you cut round bar to custom length?

Yes, cutting from 1m to 12m available, standard length 6m.

Q:Which steel grades are available?

Q235B, Q345B, 45# and 20# carbon steel, alloy grades like 4140 on request.

Q:What surface options do you have?

Black as rolled, bright turned and ground surfaces available, depending on application.

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