API 16c Choke and Kill Manifold for Oil Drilling

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Choke manifold is an essential component used in well control operations to manage well kicks and maintain pressure during oil and gas drilling. When the blowout preventer is closed, the choke valve can be adjusted to regulate casing pressure, ensuring that the bottom hole pressure remains slightly higher than the formation pressure, preventing further fluid influx into the well. Additionally, the choke manifold allows for a controlled shut-in when the well is closed, and it can also be used to release pressure safely when necessary, protecting the well structure from excessive stress. The choke manifold consists of a choke valve, gate valve, piping, fittings, and pressure gauges. The choke valves come in different types—manual, hydraulic, or positive-acting—and are used to control the flow of fluids by opening or closing them, helping to manage the casing pressure effectively. The gate valve is typically used for direct blowout operations when the pressure becomes too high. Our company offers choke manifolds in five pressure classes: 14MPa, 21MPa, 35MPa, 70MPa, and 105MPa. Custom designs are also available to meet specific customer requirements. Below is a detailed specification table for our choke and kill manifolds:
Name Choke Manifold Kill Manifold
Model JG/S2-35 JG/SY-35 JG/SY2-70 JG/S2Y2-105 YG-35 Y-70 YG-105
Main and Sideward Diameter 3 1/8 × 2 1/16 (80 × 52) | 4 1/6 × 2 9/16 (103 × 65) | 4 1/6 × 3 1/16 (103 × 78)
Working Pressure (psi/MPa) 3000 (21) / 5000 (35) 3000 (21) / 10000 (70) 5000 (35) 10000 (70) 15000 (105)
Working Temperature (°C/°F) LU: -46°C ~ +121°C (-50°F ~ 250°F)
Working Mediums Drilling fluid, mud, and petroleum (with hydrogen sulfide)
Control Type Two-winged manual choke valve Two-winged hydraulic manual choke valve Three-winged hydraulic manual choke valve Four-winged double-hydraulic manual choke valve Two-winged main relief valve
In addition to the above specifications, all choke manifolds are manufactured using high-quality alloy materials and undergo polishing surface treatment to ensure durability and performance under harsh conditions. They are packaged in wooden cases for safe transportation and are sourced from China, known for its reliable manufacturing standards. The trademark of the product is JIELIN, and it complies with API 16C standards. The HS code for this product is 84314310.

Welding Electrode

WELDING ELECTRODE:


The welding rod is composed of two parts: the welding core and the coating. The welding rod is to apply the coating (drug skin) evenly and centripetally on the welding core outside the metal welding core. Different types of welding rods have different welding cores. The welding core is the metal core of the welding rod. In order to ensure the quality and performance of the weld, there are strict regulations on the content of each metal element in the welding core, especially for the content of harmful impurities (such as sulfur, phosphorus, etc.). Limits, superior to base metal.


Category AWS standard Chemical compostition of deposited metal(wt%)
C Mn Si Cr Ni Mo P S Cu
Carbon Steel E7018 0.150 1.600 0.750 0.200 0.300 0.300 0.035 0.035 -
Stainless Steel E308-16 0.080 0.5-2.5 1.000 18.0-21.0 9.0-11.0 0.750 0.040 0.030 0.750
E308L-16 0.040 0.5-2.5 1.000 18.0-21.0 9.0-11.0 0.750 0.040 0.030 0.750
E309-16 0.150 0.5-2.5 1.000 22.0-25.0 12.0-14.0 0.750 0.040 0.030 0.750
E309L-16 0.040 0.5-2.5 1.000 22.0-25.0 12.0-14.0 0.750 0.040 0.030 0.750
E309LMo-16 0.040 0.5-2.5 1.000 22.0-25.0 12.0-14.0 2.0-3.0 0.040 0.030 0.750
E316L-16 0.040 0.5-2.5 1.000 17.0-20.0 11.0-14.0 2.0-3.0 0.040 0.030 0.750
E347-16 0.080 0.5-2.5 1.000 18.0-21.0 9.0-11.0 0.750 0.040 0.030 0.750
E310-16 0.08-0.20 1.0-2.5 0.750 25.0-28.0 20.0-22.5 0.750 0.030 0.030 0.750
E2209-16 0.040 0.5-2.5 1.000 21.5-23.5 8.5-10.5 2.5-3.5 0.040 0.030 -
Heat Resisting Steel E9015-B3 0.05-0.12 0.900 1.000 2.00-2.50 - 0.9-1.2 0.030 0.030 -
Cast Iron ENi-C1 2.000 2.500 4.000 - ≥85 - - - 2.500
ENiFe-C1 2.000 2.500 4.000 - 45-60 - - 0.030 2.500
Nickel base
Alloy 		ENi-1 0.100 0.750 1.250 - ≥92 - 0.030 0.020 0.250
ENiCrFe-1 0.080 3.500 0.750 13.0-17.0 ≥62 - 0.030 0.015 -
ENiCrFe-2 0.100 1.0-3.5 0.750 13.0-17.0 ≥62 0.5-2.5 0.030 0.020 -


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