Dajin Steel | Professional One-Stop Steel Bars Manufacturer & Exporter

About Dajin Steel

Shandong Dajin Metal Material Co., Ltd. is a professional special steel inventory and exporter. Since 2010, we have been providing steel export services globally. Our company is located in Laiwu, a renowned steel city in Shandong Province, and enjoys a superior geographic location.

Dajin possesses solid professional capabilities in metallurgy, rolling, forging, heat treatment, UT testing, and metallographic analysis. The company has grown from a small steel trading enterprise, and as business volume has continued to expand, its product range has become more diverse and its quality more stable.

In 2021, Dajin strategically invested in a portion of the equity of upstream factories to better control production and quality. Through a comprehensive supplier management system, regular factory audits, and full-process quality tracking, we ensure that every batch of products meets the stringent requirements of our customers.

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Our Steel Products

1020 Hex Steel Bar

Cold drawn carbon steel hex bar with excellent machinability. Meets ASTM and JIS standards.

Grade: 1020
Shape: Hexagonal
Size Range: 5mm - 300mm
Standards: ASTM, SAE, JIS

18CrNiMo7-6 Forged Steel

High-strength alloy forged steel ideal for heavy-duty industrial applications.

Grade: 18CrNiMo7-6
Process: Forged
Application: Mining, Gear Systems
Heat Treatment: Quenched & Tempered

Steel Square Bar

Precision cold-drawn square steel bars in carbon and alloy grades.

Grades: 1045, 4140, 1215
Shape: Square
Size: 10mm - 200mm
Finish: Shiny, Smooth

1215 Free Cutting Steel

High-machinability hex steel bar ideal for fastener and automotive parts.

Grade: 1215
Type: Free Cutting
Shape: Hexagonal
Standards: ASTM A29

ASTM A193 B7 / L7 Steel Bar

High-tensile alloy steel bar for high-pressure and high-temperature service.

Grade: 4140 / 4142
Standard: ASTM A193
Application: Bolting, Oil & Gas
Heat Treated: Yes

316 Stainless Steel Round Bar

Corrosion-resistant stainless steel bar for marine and chemical environments.

Grade: AISI 316 / 1.4401
Shape: Round
Finish: Bright, Annealed
Standards: ASTM A479

Hot Rolled Steel Bar

Durable and cost-effective hot rolled carbon and alloy steel bars.

Grades: SS400, SAE 1045
Process: Hot Rolled
Size Range: 10mm - 300mm
Applications: Structural, Machinery

Carbon Steel Round Bar

High-quality cold-drawn round bars in 1018, 1020, and 1045 grades.

Grades: 1018, 1020, 1045
Shape: Round
Finish: Bright, Smooth
Standards: ASTM, SAE, JIS

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Steel Processing Services

Steel Cutting

Cut-to-length services for round, square, hex, and plate in carbon, alloy, stainless, and tool steel.

Steel Drilling

Precision drilling up to 300mm diameter and 3000mm depth. Ideal for oil and drilling industry.

Heat Treatment

Quenching, tempering, annealing, normalizing, and cryogenic hardening for enhanced mechanical properties.

Precision Machining

CNC lathing, milling, grinding, drilling, and surface treatment for semi-finished parts.

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Frequently Asked Questions

What steel grades do you supply?

We supply carbon steel (1018, 1020, 1045), alloy steel (4140, 4145, 42CrMo4), stainless steel (303, 304, 316), and free cutting steel (1215, 12L14, SUS303 Cu).

What is your minimum order quantity (MOQ)?

Our standard MOQ is 2 tons. We also accept sample requests for evaluation.

What is your delivery time?

The average delivery time is 10–15 days after order confirmation, depending on destination and product availability.

Do you offer OEM services?

Yes, we provide full OEM services including cutting, drilling, heat treatment, and precision machining to your specifications.

What standards do your products meet?

Our steel bars meet ASTM, SAE, and JIS specifications and standards, with full quality documentation available.

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Professional, Reliable One-Stop Steel Bars Manufacturer