FAQ

Q1:What is the material of solid buoyancy?

A1:The solid buoyancy material produced by Hejia is a pure composite material composed of hollow glass microbeads (φ20μm ~ 150μm) added to the epoxy resin matrix material. The product density is 0.36g/cm³~0.7g/cm³, which can be applied to any depth of seawater.

2023-02-23 08:16:57 dongfang 0

A2:At present, we have two types of buoyancy materials.

One type is foam buoyancy material.

Foam buoyancy material performance table
Item	Model	Density	Depth	Compressive strength
Item	Model	(g/cm³)	(m)	(MPa)
Standard Performance Buoyancy	HJ-80	0.08	30	≥1.4
	HJ-100	0.10	50	≥2
	HJ-130	0.13	100	≥3
	HJ-200	0.20	150	≥4.8
	HJ-250	0.25	200	≥6.2
	HJ-030	0.30	250	≥7.6
High performance Buoyancy	HJH-200	0.20	200	≥4.5
	HJH-250	0.25	300	≥6.1
	HJH-250	0.3	450	≥7
	HJH-360	0.36	550	≥9
	HJH-040	0.4	650	≥10

One type is microsphere buoyancy material

Microsphere buoyancy material performance table
Item	Model	Density	Depth	Water absorption	Compressive strength
Item	Model	(g/cm³)	(m)	（24H）	(MPa)
Standard Performance Buoyancy	HJ-036	0.36±0.01	≤500	≤1%	≥16
	HJ-038	0.38±0.01	800	≤1%	≥21
	HJ-043	0.43±0.02	1000	≤1%	≥24
	HJ-045	0.45±0.02	1500	≤1%	≥28
	HJ-051	0.51±0.02	3000	≤1%	≥56
	HJ-054	054±0.02	4000	≤1%	≥60
	HJ-058	0.58±0.02	5000	≤1%	≥85
	HJ-063	0.63±0.02	6000	≤1%	≥110
High performance Buoyancy	HJ42H	0.42±0.01	1500	≤1%	≥30
	HJ45H	0.45±0.01	2000	≤1%	≥35
	HJ48H	0.48±0.01	3000	≤1%	≥50
	HJ51H	0.50±0.01	4000	≤1%	≥60
	HJ54H	0.54±0.01	5000	≤1%	≥80
	HJ56H	0.56±0.01	6000	≤1%	≥96
	HJ58H	0.58±0.01	7000	≤1%	≥112
	HJ63H	0.63±0.01	9000	≤1%	≥140
	HJ68H	0.68±0.01	11500	≤1%	≥170

2023-02-23 08:15:57 dongfang 0

Q3:What about the price of the product?

A3:According to the different application depth of the product, processing difficulty and surface spraying requirements, the price is not the same. Please consult staff for details.

2023-02-23 08:10:57 dongfang 0
Q4:Order Process Introduction

A4:Inquiry→Quote confirm→Delivery→Signing a Contract→Advance Payment→Production→Product Packaging →Balance Payment→Deliver Goods.

2023-02-23 08:06:57 dongfang 0
Q5:Type of Shipping

A1:By air, sea,and other suitable modes of transportation.

2023-02-23 07:16:57 dongfang 0