Services

Machining Services

Cutting - Some of the cutting we can do is cut to length, split in half, angle cutting, and near net shape cutting. Maximum Capacities - Up to 62" in diameter and 34,000 pounds per piece.

Turning - Machining material off the outside diameter of the material. Maximum Capacities - Up to 60" in diameter by 324" in length and 40,000 pounds per piece.

Trepanning - A type of machining performed on solid material whereas a hole is bored through the part. The end product is normally a heavy-wall tube or hollow bar. Trepanning is a "coring" operation as opposed to other methods of drilling a hole. The cutting toll cuts out a portion of the hole in chips and the inner portion of the hole remains solid. This solid portion is extracted after the hole is completed. Maximum Capacities - From a ¾" hole up to and 11" hole, and with lengths of 10" up to 40'.

Boring - A machining process used on tubing, rolled, pierced, extruded or trepanned, to enlarge the size of an existing hole. Maximum Capacities - Up to a 25½" hole with weight capacity of 34,000 pounds per piece.

Honing - A process using abrasive stones and emery cloth to achieve precise hole diameters and improved finishes. This process is not used to remove large amounts of material. Other machining processes would precede honing when larger amounts of material need to be removed. Maximum Capacities - ID size range of 1½" up to 20" with maximum weight capacity per piece of 34,000.

Gundrilling - This type of machining is used when smaller holes (0.125" - 1.250" diameters) are required and a closer hole diameter tolerance is preferred or required. It is the slowest of the drilling operations and the hole drift is typically greater per inch of length drilled. Maximum Capacities - ID size range of .062" up to 1½" with lengths of 10" up to 100" long.

Off-Center Drilling - A machining process where the hole is drilled off center and not down the middle of the bar. Maximum Capacities - ID size range of .062" up to 1½" with lengths of 10" up to 100" long.

Pull Bore - a machining process used on tubing, rolled, pierced, extruded or trepanned, to enlarge the size of an existing hole. This process can be used to maintain the existing outside diameter (OD) to inside diameter (ID) concentricity or used to straighten the hole for drifting without regard for the wall variance.

Pack Bore - A machining process used ot improve the straightness of the hole. This process is applicable when the hole must drift with a drift gauge and/or requires turning with a close wall concentricity. Trepanning only will not always produce a hole straight enough to facilitate these requirements.

Skive/Reaming - This machining process is used to economically enlarge the ID of tubing. The optimum amount of material removal is between 0.090" to 0.250" total, although larger amount to 0.500" can be removed.

Roller Burnish - Smoothing the surfaces of an ID through frictional contact between a harden metal roller and the ID of a tube or pipe.

Kelly/Spiral Milling - A machining process where either flat or grooved sides are machined onto the OD of the material.

Rough Maching - A machining process done without regard to finish, usually to be followed by a subsequent operation.

Straightening - A process of straightening a piece of metal by suspending the two ends and placing a stress higher than its yield strength to remove warp and distortion. Maximum Capacities - Using a rotary straightener, sizes from 1" to 2" in outside diameter and with lengths of 10' to 25' can be straightened. Under a gag press, a maximum outside diameter of 42" and weight of 35 tons per piece can be processed.

5169 Ashley Court Houston, Texas 77041 713.466.4130 fax-713.466.1029

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