Section Mill Roll Collar can be produced by static casting or centrifugal casting. The Strength of theRoll Collar depend on the material of the collar and the depth of the groove. The width of the roll collar usually depend on the experience. For Middle and small mills, the wide can be 50-100mm. For three high blooming mills, the width can be 60-150mm. For Large size and beam mills, the wide is 100-150mm. Material: Adamite, High Cr Steel, High Cr Iron, Graphite Steel etc FAQ: Q: Who we are? A: We are aprofessional rolling mill rolls manufacturer, founded in 1993. Q: Why choose us? A: We were theBaixiang branch of SinoSteel XTMMC, which produce and supply the best qualitymill rolls in China. Q: How about ourcapacity: A: More than20, 000mts