Made according to standard JB/T3411.58-99, used as support when testing parts. Divided to steel type and cast iron type. Ourside surface can be painted or chrome plated.

Type (mm)	Height (mm)	Diameter (mm)
φ 35 × 60	60	35
φ 50 × 60	80	50
φ 70 × 100	100	70
φ 100 × 150	150	100
φ 150 × 250	250	150
φ 200 × 300	300	200
φ 260 × 400	400	260
φ 280 × 450	450	280
φ 300 × 500	500	300