What is your delivery time?

For standard sizes in stock, delivery is within 7-15 days. For forged or customized orders, it takes about 25-40 days depending on quantity.

What is the difference between Hot Rolled and Forged bars?

Hot rolled bars are generally for smaller diameters (usually <100mm). Forged bars are for larger diameters (>100mm) and offer better internal density and mechanical properties for critical parts.

Od20-630mm AISI 4130 Alloy Steel Seamless Pipe for Structural Engineering

Name: Od20-630mm AISI 4130 Alloy Steel Seamless Pipe for Structural Engineering
Brand: Shandong Qianxin Steel Co., Ltd.
SKU: 2189970282

Shandong, ChinaShandong Qianxin Steel Co., Ltd.

US$800.00-1,100.00

1 Ton

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Yes

Warranty

Yes

Model NO.

AISI 4130 Alloy Steel Seamless Pipe

Type

Seamless

Technique

Hot Rolled

Material

Alloy Steel

Surface Treatment

Black

Usage

Hydraulic/Automobile Pipe, Oil/Gas Drilling, Machinery Industry, Mining, Special Purpose

Section Shape

Round

Material Grade

AISI 4130 /GB 30CrMo /En 41crmo4 / DIN 1.7220

Steel Family

Chromium-Molybdenum (Cr-Mo) Steel

Manufacturing Process

Hot Rolled / Cold Drawn / Cold Rolled

Precision Option

Precision Cold Drawn Seamless

Heat Treatment Options

Annealed / Normalized / Q&T

Weldability

Excellent (Low Carbon Equivalent)

Machinability

Good (Best in Annealed Condition)

Strength Level

High Strength & Toughness Balance

Dimensional Accuracy

High Dimensional Accuracy

Wall Thickness Uniformity

Uniform Wall Thickness

Surface Finish Options

Black / Peeled / Turned / Ground / Polished

Outer Diameter Range

Od: 20-630 mm

Wall Thickness Range

Wt: 1-50 mm (Custom)

Length Supply

Random or Fixed Length

Cutting Service

Precision Cutting Available

Transport Package

Custom Made

Specification

AISI 4130 Alloy Steel Seamless Pipe

Trademark

QIANXIN

Origin

Shandong, China

Production Capacity

50000pieces/Year

Key features

High Strength & Toughness: AISI 4130 Cr-Mo alloy steel offers superior strength and toughness balance for demanding applications.

Wide Dimensional Range: Outer diameter from 20mm to 630mm and wall thickness from 1mm to 50mm available.

Multiple Surface Finishes: Options include Black, Peeled, Turned, Ground, and Polished to suit various needs.

Heat Treatment Options: Available in Annealed, Normalized, or Quenched & Tempered conditions for enhanced properties.

Precision Manufacturing: Hot rolled and precision cold drawn processes ensure high dimensional accuracy and uniform wall thickness.

Comprehensive Certifications: Holds ISO9001, ISO14001, ISO45001, CE, and GJB9001C-2017 military standard certifications.

Mill Test Certificate: EN 10204 3.1 MTC provided with every shipment detailing chemical and mechanical properties.

Flexible Customization: Supports special sizes, small batches, and custom designs with flexible customization options.

Company profile

Shandong Qianxin Steel Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 3 years CertifiedNearest Port: Qingdao Port CertifiedTerms of Payment: LC, T/T, D/P, etc.

About Our Factory & Business Background

AddressLiaocheng, Shandong, China

Plant Area3015 square meters

Number of Employees10

Registered Capital10,000,000 RMB

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

Average Lead TimePeak Season Lead Time: within 15 workdays, one month Off Season Lead Time: within 15 workdays

Minimum Order Quantity1

Supply Chain Partners20

Our Production Capability & Technical Expertise

Main ProductsSteel Round Bar, Seamless Steel Pipe, Steel Plate, Shaped Steel Tube

Production Lines1

Production MachinesBand sawing machine

QA/QC inspectors2 people

Inspection Type for Finished Products100% inspection(Visual inspection & Function inspection)

Inspection Method for Finished ProductsFinished product checked by packing staff

R&D Engineers2 people

Traceability of Raw MaterialsYes

Our Industry Experience & Global Business Record

Year of Establishment2021-07-07

Main MarketsDomestic

Repeat Buyers Choice80%~100%

Number of Foreign Trading Staff3

Overseas Agent/BranchNo

New Products Launched in Last yearNo

Our Certifications, Standards & Industry Recognition

Management System CertificationISO9001:2015, ISO45001:2018, ISO14001

Cooperated with Fortune 500No

Product Q&A

Q:Can you provide the Mill Test Certificate (MTC)?

Yes, we provide EN 10204 3.1 MTC with every shipment, detailing chemical composition and mechanical properties. Third-party inspection (SGS/BV) is also welcome.

Q:Do you offer heat treatment services?

Yes, we can provide Quenching and Tempering (Q+T), Annealing, or Normalizing services according to your required hardness (e.g., HB 250-300).

Q:Can I visit your factory before placing an order?

Absolutely! We encourage factory visits. It is the best way to verify our quality and capacity. We have a dedicated team to handle visa invitation letters, airport pick-up, and accommodation arrangements.

Q:Do you provide samples for testing?

Yes. For standard sizes, we can provide free samples (freight collect). For customized specifications or large forged bars, we can produce a sample batch for your approval before mass production.

Q:How do you pack the steel bars?

Standard seaworthy packing. Bundles are wrapped with steel strips and covered with plastic caps at both ends to prevent damage during ocean transport.