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Underground Coal Mine Support High Strength Twist Bolt for Mining

Updated 2026-11-04 · Markdown version

Model no. twist rock bolt

US$4.40400–4,999 pieces

US$2.365,000–9,999 pieces

US$1.2610,000+ pieces

MOQ 400 pieces · Final price confirmed in your quote

Standard: GB
Surface Treatment: Galvanized
Color: Black,Silver
Finish: Bright(Uncoated),Longer Life Ticn
Diameter: 16-22mm
Length: 300-350mm
Package Size: 80.00cm * 20.00cm * 20.00cm

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Specifications are as listed for this product. Engineering Hardware & Fasteners confirms ratings, mating parts, compatibility, packing and lead time with you before you order.

Specifications

Customization	Available
Certification	CE, ISO 9001:2000
Standard	GB
Model NO.	twist rock bolt
Surface Treatment	Galvanized
Manufacturing Process	Forging
Product Name	Long Twist Bolt
Color	Black,Silver
Finish	Bright(Uncoated),Longer Life Ticn
System of Measurement	Customized Sizes
Diameter	16-22mm
Capacity	High Bearing Capacity
Type	Rebar and Round Steel
Length	300-350mm
Function	Easy to Cut
Application	Mine Support
Sample	Available
Quality	Excellent
Delivery Time	15-20days
Specification	235B
Origin	China
HS Code	7308909900
Production Capacity	50000 Pieces/Year
Package Size	80.00cm * 20.00cm * 20.00cm
Package Gross Weight	1.500kg
Our enterprise vision is	casting industry famous brand, building industrial and mining leading enterprises.
Accepted Delivery Terms	FOB;
Accepted Payment Currency	USD;
Accepted Payment Type	T/T,L/C,D/P D/A;
Language Spoken	English,Chinese
Category	Structural & Heavy Hex Bolts

Technical parameters

item	value
Color	silver, Black
Finish	Bright(Uncoated), Longer Life TiCN
System of Measurement	Customized Sizes
Material	Steel
Diameter	5/16IN, 12mm
Capacity	High bearing capacity
Type	Rebar and round steel
Function	Easy to cut
Application	Mine support
Diameter	24/25/28/30/32mm
Sample	Availabe
Quality	Excellent
Standard	GB
Model Number	16.18.20
Length	300-350mm, customized

Description

Underground Coal Mine Support High Strength Twist Bolt for Mining is part of our structural & heavy hex bolts range (Bolts).

Key details

Type: Rebar and Round Steel
Standard: GB
Diameter: 16-22mm
Length: 300-350mm
Surface Treatment: Galvanized
Finish: Bright(Uncoated),Longer Life Ticn
Application: Mine Support
Certification: CE, ISO 9001:2000

Available configurations include standard, surface treatment, color, finish and diameter. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 400 pieces at US$1.26 – 4.40 per piece. Send one inquiry with the part number, quantity and destination, and Engineering Hardware & Fasteners confirms size, thread, material, grade, finish, price, lead time and shipping, checks the goods before dispatch and ships them to you.

Frequently asked questions

What is the minimum order quantity (MOQ) for Underground Coal Mine Support High Strength Twist Bolt for Mining?

The listed minimum order is 400 pieces, at US$1.26 – 4.40 per piece. Smaller trial quantities or samples can be requested in your inquiry; Engineering Hardware & Fasteners confirms what is possible for your size.

How does the price change with quantity?

Volume pricing: US$4.40 for 400–4,999 pieces; US$2.36 for 5,000–9,999 pieces; US$1.26 for 10,000+ pieces. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of Underground Coal Mine Support High Strength Twist Bolt for Mining?

Type: Rebar and Round Steel; Standard: GB; Diameter: 16-22mm; Length: 300-350mm; Surface Treatment: Galvanized; Finish: Bright(Uncoated),Longer Life Ticn. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include standard, surface treatment, color, finish and diameter. Size, thread, length, material and grade, surface finish, head marking, packaging and labels can be quoted to your specification or drawing.

What is the lead time and how is it shipped?

Lead time depends on quantity and customization and is confirmed in your quote. Engineering Hardware & Fasteners checks the goods before dispatch and ships by express, air or sea; mixed orders can be consolidated in one shipment.

Which other structural & heavy hex bolts are available?

The Structural & Heavy Hex Bolts category lists 2,565 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/bolts/structural-heavy-hex-bolts/

How we work

Specified, checked and shipped by Engineering Hardware & Fasteners

Engineering Hardware & Fasteners supplies bolts, screws, nuts, washers, anchors, rivets and fastening hardware to equipment makers, contractors, distributors and maintenance teams. Orders go through one controlled process: size, thread, material, grade and finish confirmed, samples approved, dimensions, thread fit and plating checked before packing, then packed for export — standard or made to drawing.

DIN, ISO, ASTM, ANSI, JIS and GB standard parts
Non-standard parts made to your drawing
Dimensions, thread gauges and plating checked before packing
Export cartons and pallets, consolidated mixed orders
Samples available for approval before mass production

More about us → · Request a sample or custom quote →

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US$1.26 – 4.40MOQ 400 piecesGet a quote WA