Purchase Qty. Reference FOB Price
1-99 Pieces US$1,000.00
100-199 Pieces US$980.00
200-499 Pieces US$950.00
500-999 Pieces US$900.00
1,000+ Pieces US$870.00
Product Description
API casing cement stage collars for oilfield Drill-out free stage cementing collar features inner closing structure,opening through pressure difference.The closing plug drives the closing sleeve down and then shuts circulating ports. Features: 1.Opening pressure can be adjusted and it is not ...