Ja-3 Shear Relief Valve

Rongli Petroleum Machinery Co., Ltd. Specializes in oilfield equipment. Headquartered in Qingzhou, China, we supply different kinds of oilfield equipment including drilling equipment, workover equipment and production equipment, which meets the industry standards established by the American Petroleum Institute (API) and the International Standards Organization (ISO). As a great supplier of quality oilfield equipment to the oil and gas industry, we ship our products around the world.
Drilling Rigs
We supply a full line of drilling rig packages: Skid-mounted drilling rigs, truck-mounted drilling rigs and trailer-mounted drilling rigs. Our skid-mounted drilling rigs include diesel electric AC/VFD or DC/SCR drive rigs, mechanical drive rigs, and combination drive rigs, from 1, 000 HP to 6, 000 HP. Our truck-mounted drilling rigs range from 450 HP to 1, 000 HP.
Workover Rigs
Our product line includes offshore and onshore workover rigs, which range from 150 HP to 1, 000 HP. The service depth of our workover rigs usually equipped with Caterpillar diesel engines and Allison transmissions is from 8, 000 ft to 30, 000 ft.
Drilling Equipment
We sell a full line of API certified drilling rig components including masts, substructures, drawworks, crown blocks, traveling blocks, hooks, hook blocks, swivels, rotary tables, and top drives. The rated load of our AC/VFD drive top drives is from 190 tons to 1, 000 tons.
Triplex Mud Pumps
We supply Emsco F-series triplex mud pumps including F-500, F-800, F-1000, F-1300, F-1600 and Gardner Denver PZ series triplex mud pumps including PZ-7, PZ-8 and PZ-9. We also sell unitized mud pump packages driven by AC/DC motors or diesel engines (Caterpillar, Detroit, Cummins, or other brands).
Well Control Equipment
We market Shaffer and Cameron type blowout preventers, which include annular and ram type BOPs. Also included in our well control equipment are BOP closing units, choke manifolds, and kill manifolds.
Solids Control Equipment
Our solids control equipment includes centrifuges, shale shakers, desanders, degassers, desilters, mud cleaners, agitators, gas-liquid separators, shearing pumps, and sand pumps.
Oil Country Tubular Goods
We supply quality drill pipes, heavy weight drill pipes, drill collars, casing and tubing. Our drill pipes are in accordance with API Spec 5D and their sizes are from 2-3/8" to 6-5/8". The steel grades of our drill pipes include E75, X95, G105, and S135.
Quality Equipment with Fast Delivery
We know that our customers need quality oilfield equipment with competitive prices and short delivery time. Usually, we deliver the equipment to our customers in a timely manner so that they don't need to postpone their drilling or workover activities.