What does low relaxation mean?

It means the prestress loss stays within limited range for long-term bridge operation.

Can accept third-party inspection?

SGS or other third-party inspection is acceptable before shipment.

Can supply MTC certificate?

Yes, batch MTC material test reports are available.

What is your delivery time?

10-20 working days for standard sizes, longer lead time for anti-corrosion customized orders.

What types of bridge projects fit this bar?

Highway, railway, municipal overpass and large-span bridge prestressing projects.

Psb830 Thread Steel Bar for Tunnel Prestressing Works

Name: Psb830 Thread Steel Bar for Tunnel Prestressing Works
Brand: Tianjin Zengze Steel Trading Co., Ltd.
SKU: 1933288292

Tianjin, ChinaTianjin Zengze Steel Trading Co., Ltd.

US$480.00

5-9 Tons

US$470.00

10-19 Tons

US$460.00

20-49 Tons

US$450.00

50-99 Tons

US$430.00

100+ Tons

Sample price:US$10.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Online Technical Support; on-Site Engineer Availab

Warranty

1 Year

Model NO.

ZZ-I-079

Length

6m,9m,12m, or Customized

Standard

Grade

HRB400 / Hrb400e / HRB500 / Hrb500e

Material

Hot Rolled Deformed Steel Bar (Low-Alloy High-Stre

Nominal Diameter

6mm-40mm (up to 50mm Customizable)

Yield Strength

≥400MPa (HRB400) / ≥500MPa (HRB500)

Tensile Strength

≥540MPa (HRB400) / ≥630MPa (HRB500)

Elongation

≥16% (HRB400) / ≥17% (HRB500)

Uniform Elongation

Agt ≥7.5% (Seismic Grade E)

Surface Shape

Hot-Rolled Deformed (Ribbed); Free From Cracks, Se

Delivery Condition

Hot Rolled

Processing Service

Cutting to Length, Bending, Threading, Coupler Thr

Connection Method

Mechanical Splice (Threaded Coupler) / Lapping / W

Application

Concrete Reinforcement for Buildings, Bridges, Roa

Packaging

Bundle with Wire/Steel Strip, Tagged with Heat Num

Unit

Ton (Theoretical Weight, Deviation Per National St

Certification

ISO9001; Mill Test Certificate (Mtc) Supplied with

Transport Package

Standard Package (Steel-Strip Bundled, Pallet/Expo

Specification

standard size

Trademark

Zengze

Origin

China

HS Code

7216321000

Production Capacity

5000tons Per Month

Key features

Seismic Performance: Excellent ductility and toughness designed for seismic-grade building projects.

Customized Length: Available in standard 6m/9m/12m or fully customized fixed lengths.

High Bonding Force: Ribbed surface structure ensures firm occlusion and prevents sliding with concrete.

Full Processing Service: Supports cutting, bending, and threading according to construction drawings.

Comprehensive Certification: 100% compliant with GB/T 1499.2 standard with free MTC material test reports.

Wide Diameter Range: Diameters from 6mm to 40mm, with up to 50mm available upon customization.

Fast Delivery: 7-15 working days for standard specs, 10-20 days for customized orders.

Optional anti-corrosion treatment, resists underground water and corrosive medium in tunnel strata.

Suitable for tunnel primary support, lining prestress, slope anchoring and anti-floating underground projects.

Batch-by-batch physical and chemical inspection before shipment, MTC certificates available for tender review and tunnel project acceptance.

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: ≤0.89h 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 PSB930 threaded steel bar used for?

It is mainly applied to bridge prestressing, pier reinforcement, foundation anti-floating and slope anchoring.

Q:What is the advantage of full thread design?

Thread runs through the whole bar, so anchoring and connection can be realized at any position.

Q:Can it be used in humid underground bridge foundation?

Yes, anti-corrosion coating service can be provided to resist underground water corrosion.

Q:What diameters are available?

18mm to 50mm, custom fixed length cutting supported.

Q:Do you supply matching anchorage accessories?

Yes, anchor nuts, couplers, anchor plates and protective caps are available.

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