BlackGold Equipment LLC. Houston:281-440-5555 Midland:432-614-1168 Alberta:780-463-6425 Unbeatable Price with Superior Quality , Creditable Management in Pursuit of Excellence Distributed by BlackGoldEquip.com Quote: Quote@One-Stop-Savings.com API Grade Sucker Rod Oursucker rods are manufactured according to the latest edition API 11B and are ISO 9001/API Q1 certified in theindustry. Currently, we provide 3 types of API sucker rods formulated from differentalloys AISI 4130, AISI 4142 and AISI 4720 and are available in Grade D Alloyand Grade KD. Mechanical Properties Houston:15819 Tuckerton Rd., Houston, TX 77095 Midland: 12504 Hwy 191, Midland, TX 79707 Alberta: Unit 101, 3912-77 Ave, Leduc, AB, Canada T9E0B6