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Anchors & Construction Fixings › Foundation & Anchor Bolts

R51 Self Drilling Anchor Bolt Grouting Anchor Hollow Rod for Tunnel

Updated 2026-11-03 · Markdown version

Model no. R51

US$816.001–9 tons

US$792.0010–199 tons

US$660.00200+ tons

MOQ 1 ton · Final price confirmed in your quote

Material: Carbon Steel
Tolerance: +-1%
Standard: BS

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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

Model NO.	R51
Material	Carbon Steel
Payment Term	T/T
Tolerance	+-1%
Lodaing Port	Tianjin, Qingdao, Shanghai, etc
Certificates	R32L/R32n/R32s
Delivery	5-15 Days
Stock	Enough Stock
Transport Package	Carton Box/Plywood
Specification	R32L R32N R32S
Origin	Liaocheng Shandong
HS Code	7304592000
Production Capacity	100tons Per Month
Customization	Available
Standard	BS
Usage	Oil Mining, Coal Mining, Well Drilling, Ore Mining
Applications	It can be used as a drill pipe when drilling, and can be used as a grouting pipe during grouting. It can be used as a reinforcing rib after installation.
Category	Foundation & Anchor Bolts

Technical parameters

Product Description

Model NO.	R51 Self Drilling anchor hollow bar	Trade Terms	EXW FOB CFR CIF
Thread Type	R Thread	Transport Package	Standard Seaworthy Packing
Ultimate Load(Kn)	800	Length(M)	1-9
Yield Load(Kn)	630	Production Capacity	300000tons/Year
Specification	R51	Terms of Payment	30%T/T Advance + 70% Balance
Origin	China	Application	Construction/Underpinning/Slope Stabilization

Size	O.D(mm)	I.D(mm)	Ultimate Load(KN)	Yield Load(KN)	Weight(kg/M)
R25N-14	25.0	14.0	200	150	2.3
R32L-22	32.0	22.0	210	160	2.8
R32N-21	32.0	21.0	280	230	2.9
R32N-18.5	32.0	18.5	280	230	3.4
R32S-17.5	32.0	17.5	360	280	3.5
R32S-15	32.0	15	360	280	4.1
R38N-21	38.0	21.0	500	400	4.8
R38N-19	38.0	19.0	500	400	5.5
R51L-38	51.0	38.0	550	450	6.0
R51L-36	51.0	36.0	550	450	7.6
R51N-36	51.0	36.0	800	630	7.6
R51N-33	51.0	33.0	800	630	8.4
Steel grade	Acc. to EN10083-1
Thread direction	Left hand
Thread standard	ISO 10208 / ISO1720

FAQ

Description

R51 Self Drilling Anchor Bolt Grouting Anchor Hollow Rod for Tunnel is part of our foundation & anchor bolts range (Anchors & Construction Fixings).

Key details

Standard: BS
Material: Carbon Steel
Tolerance: +-1%
Lodaing Port: Tianjin, Qingdao, Shanghai, etc
Certificates: R32L/R32n/R32s
Stock: Enough Stock
Usage: Oil Mining, Coal Mining, Well Drilling, Ore Mining

Available configurations include material, tolerance and standard. Custom sizes, threads, materials, grades, platings and packaging can be quoted on request.

Ordering through Engineering Hardware & Fasteners

Minimum order is 1 ton at US$660.00 – 816.00 per ton. 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 R51 Self Drilling Anchor Bolt Grouting Anchor Hollow Rod for Tunnel?

The listed minimum order is 1 ton, at US$660.00 – 816.00 per ton. 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$816.00 for 1–9 tons; US$792.00 for 10–199 tons; US$660.00 for 200+ tons. Final prices depend on size, material, finish and packing and are confirmed in your quote.

What are the main specifications of R51 Self Drilling Anchor Bolt Grouting Anchor Hollow Rod for Tunnel?

Standard: BS; Material: Carbon Steel; Tolerance: +-1%; Lodaing Port: Tianjin, Qingdao, Shanghai, etc; Certificates: R32L/R32n/R32s; Stock: Enough Stock. The full specification table and any technical parameter tables are listed on this page.

Can this product be customized (OEM)?

Listed configurations include material, tolerance and standard. 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 foundation & anchor bolts are available?

The Foundation & Anchor Bolts category lists 2,223 products in different sizes, materials and finishes: https://engineeringhardware.com/fastener-products/anchors-construction-fixings/foundation-anchor-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

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US$660.00 – 816.00MOQ 1 tonGet a quote WA