What is the delivery time?

Sample order: 1-3 days after receipt of the full payment. Stock order: 3-7days after receipt of the full payment. OEM order: 15-35 days after receipt of the deposit.

Forging Custom Carbon Steel Coal Mine Rock Bolt Slotted Hex Nut OEM Forging Service

Name: Forging Custom Carbon Steel Coal Mine Rock Bolt Slotted Hex Nut OEM Forging Service
Brand: Qingdao Donrex Co., Ltd.
SKU: 2164958592

Shandong, ChinaQingdao Donrex Co., Ltd.

US$3.00

500-999 Pieces

US$0.50

1,000+ Pieces

Product profile

Customization

Available

Processing Object

Metal

Molding Style

Forging

Model NO.

Spherical Seat Lug Nuts

Molding Technics

Pressure Casting

Application

Machinery Parts

Material

Steel

Heat Treatment

Tempering

Surface Treatment

Powder Coating

Forging Tolerance

+/-0.1mm

Certification

ISO 9001:2000, ISO 9001:2008, IATF16949

Plated

as Drawings

Quality Control

Quality and Size Report Provided

Tolerance

as Requested

Transport Packaging

Wooden Case or Box Stainless Steel Perforated Wat

Production Capacities

1000000/Month

Transport Package

Carton Box, Pallets or Plywood Box

Specification

40cm*50cm*60cm

Trademark

OEM

Origin

China

Key features

OEM and ODM Services: Full customization available from designs or samples with flexible options.

ISO 9001 Certification: Certified manufacturer ensuring international quality standards compliance.

Wide Material Selection: Supports Aluminum, Stainless Steel, Steel, Titanium, Brass, and more.

Precision Machining: Tolerance range from +/-0.01mm to +/-0.05mm with high accuracy.

Advanced Equipment: Equipped with 5-axis CNC, laser cutting, EDM, and welding machines.

Comprehensive QC: 100% inspection including material, heat treatment, and dimension reports.

Fast Sample Delivery: Sample orders shipped within 1-3 days after full payment receipt.

Professional Design Team: Engineers use CAD, Pro-E, UG, and Solidworks for precise design support.

Company profile

Full CustomizationR&D CapabilitiesODM ServicesManagement Certification

Qingdao Donrex Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 18 Years CertifiedNearest Port: Qingdao PortAverage Response Time: ≤10.13h

AI-Powered supplier vetting

SummaryThe supplier offers broad customization, exports approximately 90% of sales, has exported for 18 years, and reports standardized finished-product inspection instructions. It holds CE and ISO9001:2015 certifications and has seven R&D engineers, but launched no new products last year and is explicitly not classified as a professional technical supplier or a provider of 3D software design. The supplier lacks stated inventory, overseas warehouse, overseas showroom, overseas agents or branches, and offline trade-show participation. Manufacturing capacity is constrained by the absence of a valid contract with related subcontractors. Customer evidence is limited: there is no cooperation with Fortune 500 companies, while repeat-buyer preference is reported at 50%–80%. Financial credibility cannot be assessed because no relevant financial information is provided.

CertificationsThe supplier reports CE product compliance certification and an ISO9001:2015 management-system certificate. These are explicit certifications supporting compliance and quality-management capability.

After-Sales capabilityThe supplier reports no overseas warehouse, overseas showroom, overseas agents or branches, and no overseas service countries. It does provide several quotation and payment options, but the stated international service infrastructure is limited.

R&D capabilityThe supplier has seven R&D engineers and offers multiple forms of customization, but it is not a professional technical supplier, does not provide 3D software design services, and launched no new products in the past year. The evidence shows customization capacity but weak recent product-innovation evidence.

Production capacityThe supplier has written and uniformly followed finished-product inspection instructions, reports one-month average lead times in both peak and off-season periods, and identifies 40 qualified suppliers for service capability. However, it has no inventory capability and no valid manufacturing-capacity contract with related subcontractors, creating an explicit production-structure deficiency.

Customization capabilityThe supplier explicitly provides customization from designs, customization from samples, full customization, minor customization, and flexible customization. This is direct evidence of a broad range of customization services.

Product Q&A

Q:Are you a factory or trading company?

We are a factory located in Qingdao city. It will take one hour to airport. Welcome all our clients come to visit us.

Q:What equipments do you have?

Our factory owns a full set of machining and inspecting equipments, including large CNC machining center, sodick EDM, CNC engraving machine, laser cutting machine, bending machine, laser welder, radial drilling machine, milling machine, CMM, etc.

Q:How does your factory do regarding quality control?

We test product quality from the very beginning to the very end. Our QC measure and check all the moulds and final products with CMM or other inspection tools regularly.

Q:Can you produce according to the samples or the technical drawing?

We have professional engineers who can well study samples and drawings. So we surely can produce according to your samples and technical drawings.

Q:How to order?

Step 1, please tell us what model and quantity you need; Step 2, then we will make a PI for you to confirm the order details; Step 3, when we confirmed everything, you can arrange the payment; Step 4, finally we deliver the goods within the stipulated time.