Gun metal fabricated Calibration Sleeves are considered as indispensable parts of HDPE/ PVC pipe production systems. Such metallic sleeves maintain stability of produced pipes. These vacuum calibration components are highly durable and have ergonomic appearance. Such sleeves have intensive cooling facility. Water rings of these sleeves are adjustable type. Offered metal products can be availed with chrome plated or plain surface finish based option. These are offered in different shapes and sizes. Wear proof design, good sliding characteristics, accurate dimension, optimum strength, smooth inner design and standard threading specifications are the key aspects of these sleeves. Offered Calibration Sleeves are highly durable and these have long working life.