Gruvmaster’s patented TitanSeal™ dual-seal system and One-Push™ fast-feeding technology redefine hydraulic reliability and efficiency in roll grooving. Both innovations, featured on the RG-8X flagship model, ensure leak-free, consistent, and high-performance operation for professionals.

Welping PTC140 desktop pipe cutting machine features a compact all-aluminum body and a 350 RPM high-speed motor, ideal for thin-walled steel, copper, aluminum, and PVC pipes. Portable, durable, and easy to operate for professional workshops.

Gruvmaster’s modern production line ensures consistent quality and precision in every roll grooving machine.
From assembly to testing, each unit is built with care and reliability, delivering powerful performance and meeting global demand efficiently.

The new Gruvmaster 219-630 is an upgraded heavy-duty roll grooving machine based on RG-4X, featuring a reinforced frame, larger supports, and enhanced precision.
Coming soon to market — stay tuned with Gruvmaster and Welping for updates.

Gruvmaster roll groovers enter final assembly for overseas delivery. Coordinated production lines and full inspection ensure consistent quality and reliable supply for global customers.

The RG-1X roll groover covers 1"–8" pipe sizes with a compact, integrated structure and stable hydraulic feeding. It suits both workshop and on-site use. Our factory is currently producing a batch of RG-1X units, reflecting strong demand and consistent manufacturing capability.

The RG-2M by Gruvmaster is a portable combination roll groover designed for 1"–6" pipe sizes. Featuring a compact structure and a new red-black appearance, it is suitable for on-site installation, maintenance, and renovation work. Photos show the current configuration and toolbox layout.

Photos from the Gruvmaster factory show roll grooving machines during final assembly. At this stage, machines undergo alignment, fastening, fine adjustment, and inspection. Each unit is assembled by hand following a consistent process to ensure stable structure, smooth operation, and reliable quality before shipment.

Roll grooving machines require different roller materials for different pipe conditions. This article compares plated rollers and stainless steel rollers used on Gruvmaster roll grooving machines, focusing on thin-wall pipe applications, groove quality control, durability, and cost considerations. Selecting the correct roller set based on pipe wall thickness helps improve grooving consistency and overall processing reliability.

This article explains the structural updates of the Gruvmaster RG-4X Pro based on the RG-4X. The upgrades focus on practical improvements, including a frame with integrated storage, a larger grooving assembly, reinforced pipe support, and upgraded positioning rollers. These changes enhance stability, durability, and control during long-term roll grooving operations.

The Gruvmaster AG-8Z roll grooving machine has been updated based on real job-site use.
The new version features a larger hydraulic power unit, a telescopic handle for easier movement, and an expanded pipe size range from 1″ to 16″.

The CM-20 pipe cutting machine has been updated with a split hydraulic system, replacing the previous integrated design. The hydraulic pump and cylinder are now installed separately and connected by hoses. This configuration is also applied across the 8", 12", and 20" pipe cutting machines, supporting more stable operation in workshop and on-site applications.

This article records an internal technical discussion focused on roll grooving machines. Through open discussion and 3D model review, the team examined machine structures, design choices, and practical details. Rather than formal training, the session emphasized understanding how the machines are designed and how they work in real use.

This article explains a structural adjustment made to the CM-12 pipe cutting machine to better suit on-site use. While the cutting range, hydraulic system, and working principles remain unchanged, mobility has been improved by adding wheels and a tow handle. The update focuses on easier repositioning during on-site operations without affecting cutting performance.

This article documents a practical evaluation of a pipe cutting blade used on Gruvmaster pipe cutting machines. Based on real steel pipe cutting conditions, the blade was tested through repeated cutting cycles rather than single-cut results. The focus is on wear behavior, cutting stability, usable blade life, and compatibility across multiple machine models under normal working conditions.

The CM-12 is an electric hydraulic pipe cutting machine designed for cold cutting of 2"–12" steel and stainless steel pipes. It is mainly used in fixed or semi-fixed working areas such as workshops. With a split hydraulic system, pipe support stand, and durable cutting blade, the CM-12 provides stable and straightforward cutting for daily use.

A recent batch of Gruvmaster roll grooving machines has completed final assembly and shipment preparation.
The photos document the real process from workshop assembly to wooden crate packaging, reflecting our standard inspection, packing procedures, and current delivery operations.

This article explains why a pipe stand with a scale is more efficient for batch grooving work. In repetitive grooving operations, a scale provides a clear reference for pipe positioning, reducing repeated adjustments and inconsistencies between operators. By turning experience-based setup into reference-based positioning, a scaled stand helps maintain workflow continuity and improves efficiency in continuous and multi-operator grooving tasks.

The RG-1C roll grooving machine shares the same core grooving capability as the RG-1X, with the main difference in its fixed stand and wheels. The added structure does not change grooving performance, but makes stability and handling easier for fixed workshop use. It is ideal for continuous or repetitive grooving tasks at a set workstation.

The second-generation AG-8Z Automatic Hydraulic Roll Grooving Machine introduces targeted upgrades based on real operating feedback. Improvements include an optimized hydraulic system for long-term operation, enhanced mobility with updated wheels and telescopic handles, optional wireless remote control, expanded grooving capacity up to 16", and a scaled depth-adjustment screw for easier, repeatable batch grooving.

The PTC140 bench-top pipe cutter is available in both AC-powered and lithium battery versions while maintaining the same cutting structure and performance. Designed for workshop and on-site use, it offers stable operation, easy handling, and flexible power options. Compatible with Makita batteries, the battery version supports mobile work without affecting cutting efficiency.

CM-12 and CM-20 electric hydraulic pipe cutters share the same cutting principle but are designed for different pipe sizes and working environments. CM-12 is optimized for small to medium pipes in workshop use, while CM-20 is built for larger pipes and on-site operations requiring stronger support, stability, and mobility. Choosing depends mainly on pipe size and application needs.

The PTC140 pipe cutter is designed for frequent on-site cutting work, focusing on clarity, stability, and ease of use. Its straightforward structure reduces the learning curve and supports smooth, consistent operation. Rather than complex features, PTC140 emphasizes practical usability, making it well suited for construction and maintenance environments where efficiency and reliability matter.

Selecting a roll grooving machine for 8"–24" steel pipes requires more than sufficient power. Structural stability, hydraulic consistency, and repeatable groove control become critical at larger diameters. The RG-4X is designed specifically for this range, offering a heavy-duty workshop solution with a split hydraulic system and interlocking roller structure for reliable, consistent grooving performance.

A pipe stand plays an important role in pipe processing by providing stable support during threading, cutting, and grooving operations. The VH401 pipe stand supports pipes from 1/8" to 6", featuring a tristand structure, chain vise clamping system, and foldable design for easy transport. With a load capacity of 600 kg, it offers reliable pipe support for job site work.

The VH401 tri-stand pipe vise is designed for pipe threading, cutting, and grooving preparation on job sites. Supporting pipes from 1/8" to 6", it features a stable three-leg stand, chain vise clamping system, serrated jaws, and a foldable design for easy transport. The VH401 provides reliable pipe support for field pipe installation and processing work.

A bench pipe vise provides stable pipe clamping for workshop pipe processing tasks such as threading, cutting, and grooving preparation. The VH402 bench chain vise is designed for pipes from 1/8" to 6", featuring a durable cast iron body and chain vise clamping system. Mounted on a workbench, it offers reliable support for repetitive pipe fabrication and maintenance work.

Pipe clamps and hangers may seem simple, but they play a key role in maintaining the stability of grooved piping systems. Proper support helps prevent pipe movement, uneven stress on couplings, and long-term performance issues. As part of the Gruvmaster workflow, pipe support is not an accessory, but an essential step that ensures the system remains reliable after installation.

The Gruvmaster upgraded pipe cutting blade is designed to maintain stable performance over time. Compared with standard blades that dull quickly, it delivers consistent cutting results even after multiple operations. Suitable for steel and galvanized pipes, it helps reduce blade replacement frequency, improve workflow continuity, and achieve better cost efficiency in daily pipe cutting applications.

A domestic steel pipe manufacturer tested grooving performance on 20Mn high-strength steel pipes (16", 10 mm wall) at our workshop. While a standard machine (AG-8Z) could complete the job in about 8 minutes, the heavy-duty AG-4X reduced processing time to around 2 minutes with smoother and more stable results. The test clearly showed the importance of matching equipment to working conditions.

A complete range of pipe support solutions is introduced, including pipe straps, hangers, and riser clamps. Each type serves different installation needs, from light-duty fixing to heavy-duty suspension and vertical support. This overview helps users understand product applications and selection logic for more efficient and reliable piping installations.

The RG-4X Pro demonstrates stable and consistent performance in steel pipe grooving. With a redesigned frame, upgraded rollers, reinforced pipe support, and improved positioning, it ensures uniform groove profiles and controlled edge shaping. The results show that structural stability plays a key role in maintaining grooving quality, especially under heavy-duty working conditions.

The RG-2X roll grooving machine is designed for 2"–12" steel pipes, focusing on stable operation and practical usability. With support for SCH40 pipes up to 10 mm thickness and a fully sealed hydraulic system, it is suitable for fire protection, construction, and general piping applications. The machine provides a reliable solution for medium to large diameter pipe grooving.

CM-20 pipe cutting machine is designed for cold cutting 8"–20" steel and galvanized pipes. This article shows its factory cutting test, clean no-spark cutting performance, upgraded blade, 13 mm wall thickness capacity, separate hydraulic system, and easy mobility for workshop and job site pipe cutting.

This article explains the outward groove forming process with RG-2T. An outward groove is not cut from the pipe but formed by rolling pressure. The article introduces how the groove is created, how RG-2T works during operation, and which machine features support stable groove forming.

A sealed split hydraulic system can help pipe cutting and roll grooving machines work more smoothly in dusty and demanding jobsite conditions. By reducing the risk of hydraulic oil contamination, it supports more stable blade feeding, roller pressing, and long-term machine performance. This article explains why hydraulic system design matters for users who need reliable pipe tools for regular workshop or site work.