Riser Joint

Assembly

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One 75 ft (22.9 m) riser joint: a 21 in main tube with bolted flange couplings, external choke, kill, booster and hydraulic lines, and syntactic-foam buoyancy.

Direct parts	5
Total parts	22
Used in	1 assembly
Class	Assembly

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One 75 ft (22.9 m) riser joint: a 21 in main tube with bolted flange couplings, external choke, kill, booster and hydraulic lines, and syntactic-foam buoyancy. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Riser Joint parts and their functions

5 top-level parts · 22 parts in total · full bill of materials below

Riser Joint parts diagram: 1 riser main tube, 2 riser auxiliary line, 3 riser buoyancy module, 4 fastener set, 5 o-ring set. 22 parts in 5 top-level items. — Riser Joint parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Riser Main Tube	1×	21 in main tube with flanges
2	Riser Auxiliary Line	5×	Choke, kill, booster, hydraulic conduits
3	Riser Buoyancy Module	8×	Syntactic foam modules
4	Fastener Set	6×	Flange bolt circles
5	O-Ring Set	2×	Set of elastomer rings seated in grooves to seal static or slow-moving joints against fluid and gas, sized to ISO 3601.

3D model

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Build & assembly graph

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Bill of materials for Riser Joint

5 top-level lines · 5 rows shown · 22 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Riser Main Tube	drillship-riser-tube	1×	1	·	part
2	Riser Auxiliary Line	drillship-riser-aux-line	5×	5	·	part
3	Riser Buoyancy Module	drillship-riser-buoyancy	8×	8	·	part
4	Fastener Set	fastener-set	6×	6	·	part
5	O-Ring Set	oring-set	2×	2	·	part

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Where the riser joint is used

1 product across 1 domain contain it, directly or inside a sub-assembly

Oil, Gas & Process 1 Deepwater Drillship

Used in 1 assembly

Marine Riser System

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $0.50–$100. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳Foxconn foxconn.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Flex (Singapore) flex.com ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks
🇮🇳Dixon Technologies dixoninfo.com ↗	Noida, IN	Electronics contract mfg	1,000 pcs	6–10 wks
🇨🇳BYD Electronics bydelectronic.com ↗	Shenzhen, CN	Electronics contract mfg	1,000 pcs	6–10 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	1,000 pcs	6–10 wks