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 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.