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Hangzhou Welping Machinery Equipment Co.,Ltd

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Gruv-One RG-4M Manual Roll Groover | Patented Compact Pipe Grooving Tool for 1-1/4"–6" Steel Pipes

group name: Manual Roll Grooving

Min Order: 1 piece

brand name: Gruvmaster & Welping

model: RG-4M（Gruv-One）

Nearest port for product export: Shanghai, Ningbo

Delivery clauses under the trade mode: FOB, CFR, CIF, EXW, FCA, DDU, Express Delivery

Acceptable payment methods: T/T, L/C, MoneyGram, Credit Card, PayPal, Westem Union

update time: Wed, 02 Sep 2026 17:16:22 GMT

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Paramtents

Fabrication Capacity 1 1/4"-6"(DN25-DN150) Steel Pipe
Max Wall Thickness 7mm
Operation radius 90 mm / 3-1/2"
Packing Size 37*34*22 CM
Net Weight 9.65 KG
Gross Weight 13.2 KG

Packging & Delivery

50cm x22cm x53cm
Min Order1 piece

Briefing

① Gruv-One RG-4M manual roll groover for 1-1/4"–6" steel pipes. ② The world's first patented compact roll groover with a 90 mm minimum working radius. ③ designed for tight-space pipe grooving applications.

Detailed

Gruv-One Manual Roll Groover

The World's First Patented Compact Pipe Grooving Tool with 90 mm Working Radius

Key Features

Features of Manual Roll Groover Machine

· The Gruv-One is the world's first patented compact roll groover, achieving a minimum working radius of only 90 mm for pipe grooving in spaces inaccessible to conventional machines.

· Compact and portable design with a dedicated toolbox, allowing easy transportation and operation in confined working spaces.

· Designed for steel pipes from 1-1/4" to 6" (DN32–DN150), suitable for common fire protection and mechanical piping applications.

· Two-stage gear reduction system ensures smooth operation with reduced manual effort.

· Quick shaft replacement design allows convenient configuration changes and easier maintenance.

RG-4M Manual Roll Groover Operation

Pipe Roll Grooving Machine Parameter

Model:	RG-4M
Suitable materials:	Carbon Steel,SS Pipe
Fabrication Capacity:	1 1/4"-4"SCH10/405"-6" SCH10/20
Operation	Manual
Max wall thickness:	7mm
Operation radius (mm):	90mm
Operation radius (In):	3 1/2"
Net Weight：	9.65 KG
Gross Weight	13.2 KG
Packing size:	373422 CM

Standard Configuration & Optional Accessories

Drive Unit

Catalog No.		Description			Net weight		Size(cm)
999113		1 ¼"-6" roll grooving assembly			12 KG		492240

Standard

Catalog No.	Description	Net weight
911010	Drive roller 1 ¼"~6" (Φ42~Φ168）	0.70 KG
912016	Groove roller 1"~6" (Φ33~Φ168)	0.30 KG
998036	Rachet with socket	1.65 KG

Optional

Catalog No.		Description			Net weight
998034		HDPE tool case			2.70 KG

Roll Grooving Machine Configuration

World's First Patented Compact Roll Groover

The Gruv-One is the world's first patented compact roll groover, achieving a minimum working radius of only 90 mm for pipe grooving in spaces inaccessible to conventional machines.

Manual Operation Without Power Supply

The manual drive design eliminates the need for electricity, allowing flexible operation at different job sites, especially in maintenance and installation applications.

Compact & Portable Design

The lightweight and compact structure with a dedicated toolbox makes transportation and storage easier, providing a convenient solution for on-site grooving.