stabilizer forging, as per API 7-1 standard. stabilizer forging, specifications: Standard: API 7-1 OD: 6" ---36" Material: AISI 4140 H, 4140H MOD, Non-magnetic Material Hardfacing for you to choose: HF1000, HF2000, HF3000, HF4000, etc Products are made strictly as per API 7-1 standard with the Ineternational Inspection ---BV Inspection. Or you can appoint any reliable Third Party Inspction. Welcome your inquiry.